Comparison: Best Filler For Microwave Heating Bag (Updated | Dec 8th)
If you’ve ever zipped open a microwave heating bag only to find lumpy, uneven filler that cools too fast, you know not all fillers are created equal. From soothing sore muscles to unwinding after a long day, the right filler makes all the difference. But with options like rice, flaxseed, and even cherry pits, how do you know which one truly delivers lasting warmth and comfort? We’ve tested the most popular fillers to find out which reigns supreme—so you can choose with confidence and cozy up smarter.
Editor’s Choice
Best for a specific purpose
- Best for xxl moist heat: REVIX Extra Large Microwave Heating Pad for Back with Moist Heat
- Best for compact weighted warmth: Microwave Heating Pad (with Removable Cover) – Weighted Microwavable Moist Heat Therapy Pad for Back
- Best for targeted corn comfort: Microwave Heating Pad (with Removable Cover) – Weighted Microwavable Moist Heat Therapy Pad for Back
- Best for handle-ready relief: COMOIL Microwave Heating Pad for Neck and Shoulders Back with Handles
- Best for fragrance-free relief: SacksyThyme Microwave Heating Pad for Cramps
- Best for slim flexible therapy: MEISENHOME Microwave Heating Pad for Pain Relief
- Best for lavender aromatherapy warmth: SacksyThyme Microwave Heating Pad for Back
- Best for lavender scented relief: SacksyThyme Microwave Heating Pad for Back
- Best for dual‑side comfort: Microwave Heating Pad 6 x 12 Heating Pad Microwave
- Best for orange aromatherapy wrap: Bed Buddy Aromatherapy Heat Pad and Cooling Neck Wrap – Microwave Heating Pad for Sore Muscles – Cold Wrap Pack for Aches and Pain
Product Comparison: Best Filler For Microwave Heating Bag
XXL Moist Heat
REVIX Extra Large Microwave Heating Pad for Back with Moist Heat, Microwavable Heated Wrap for Full Back, Stomach, Shoulder and Neck,Leg, Support Cold Therapy
REVIX
- Moist Weighted Heating Pad for Back: The heating pad is designed as an extra large rectangle, easy to secure, adjust and flexible enough to conform to any body parts. This heat wrap would be a great treatment for kinds of body discomfort.If you are suffering form stress or body discomfort, you will enjoy many benefits form this pad
- Long-lasting XXL Heat Pad: This bean bag heating pad microwavable is filled with flaxseeds, millets and clay beads, offers a moist heat therapy for neck shoulders and back and provides fast relief for muscle. Multi-section design ensures the fillers do not migrate to just one area, allowing for maximum surface area therapy. The heat packcover is made of skin-friendly Minky and Dutch Fleece, the soft stretchy fabric feels silky-soft to the touch
- Enjoy Heat & Cold Therapy: Warm the large wrap in a microwave to obtain a soothing heat therapy while your muscles are relaxed by the moist heat. Chill in freezer to be used as a plush, reusable ice pack for muscles recovery after strenuous activity or the gym. 2-in-1 multifunctional design, a household necessity
- Versatile and Flexible: Apply the heat wrap when you are working at a desk, sitting on the couch, preparing a meal or even driving. The wrap is not only large enough to relax back muscle but also flexible fit any part of the body
- Ideal Choice for All Occasions: This weighted heat pad is the best gift for festival, anniversary and birthday. Believe in your choice of REVIX microwave heating pad and services
Compact Weighted Warmth
Microwave Heating Pad (with Removable Cover) – Weighted Microwavable Moist Heat Therapy Pad for Back, Neck, Shoulders, and Cramps – Portable, Reusable Cold or Warm Compress, 10″ x 7″, 2.5lbs
IOWA CORN BABY
- Soothing Moist Heat: Enjoy comforting warmth with our microwavable, corn-filled heating pad. Designed to provide cozy relaxation for areas like your back, shoulders, knees, and more, it’s the perfect way to unwind after a long day.
- Weighted for Comfort: Engineered with the ideal weight for gentle, even pressure, our pad ensures a snug fit that enhances your relaxation experience. Whether you’re using it warm or cool, its weight keeps it securely in place.
- Versatile Hot & Cold Use Easily transition between soothing heat and refreshing cold therapy. Simply microwave for warmth or freeze for a cooling effect, making it a versatile solution for year-round comfort.
- Luxurious and Easy to Clean: The soft, removable outer cover adds a touch of luxury and is machine-washable for easy maintenance. The durable cotton inner bag ensures long-lasting performance you can rely on.
- Perfectly Sized for Targeted Use: At 10 inches by 7 inches and filled with 2.5 pounds of natural corn, our heating pad is compact yet effective. Its thoughtful size and design deliver targeted comfort where you need it most.
- Simple and Safe to Use: Heat in a clean microwave for approximately 90 seconds for comforting warmth. For additional heating, continue in 15-second intervals as needed. Note: Microwave times may vary. Do not overheat.
- Recommended Age: Adult use only.
Targeted Corn Comfort
Microwave Heating Pad (with Removable Cover) – Weighted Microwavable Moist Heat Therapy Pad for Back, Neck, Shoulders, and Cramps – Portable, Reusable Cold or Warm Compress, 10″ x 7″, 2.5lbs
IOWA CORN BABY
- Soothing Moist Heat: Enjoy comforting warmth with our microwavable, corn-filled heating pad. Designed to provide cozy relaxation for areas like your back, shoulders, knees, and more, it’s the perfect way to unwind after a long day
- Weighted for Comfort: Engineered with the ideal weight for gentle, even pressure, our pad ensures a snug fit that enhances your relaxation experience. Whether you’re using it warm or cool, its weight keeps it securely in place.
- Versatile Hot & Cold Use Easily transition between soothing heat and refreshing cold therapy. Simply microwave for warmth or freeze for a cooling effect, making it a versatile solution for year-round comfort.
- Luxurious and Easy to Clean: The soft, removable outer cover adds a touch of luxury and is machine-washable for easy maintenance. The durable cotton inner bag ensures long-lasting performance you can rely on.
- Perfectly Sized for Targeted Use: At 10 inches by 7 inches and filled with 2.5 pounds of natural corn, our heating pad is compact yet effective. Its thoughtful size and design deliver targeted comfort where you need it most.
- Simple and Safe to Use: Heat in a clean microwave for approximately 90 seconds for comforting warmth. For additional heating, continue in 15-second intervals as needed. Note: Microwave times may vary. Do not overheat.
- Recommended Age: Adult use only.
Handle-Ready Relief
COMOIL Microwave Heating Pad for Neck and Shoulders Back with Handles,33 * 5.9″ Long Heated Neck Wrap,Reusable Warmer,Moist Hot Packs,Microwavable Weighted Bag for Cold and Warm Compress
COMOIL
- Premium Quality Material ：Our microwave heating pad is made from soft and comfortable marsha velvet and all cotton fabric, ensuring a gentle, soothing touch on your skin while offering ultimate comfort.
- Superior Craftsmanship & Uniform Heat Distribution: Expertly designed microwave heating pad features 10 meticulously stitched sections, facilitating even heat distribution throughout the pad. The flexible neck and shoulder pad effortlessly conforms to your body’s contours for optimal relief.
- Multifunctional Pain Relief: This versatile microwave heating pad effectively alleviates various discomforts, such as headaches, muscle cramps, neck stiffness, and back pain, providing targeted relief and promoting relaxation.
- Natural Fillings: Warmer heated neck wrap is thoughtfully filled with 400g of natural flaxseeds, 240g of sorghum, 80g of stones, and 80g of millet, offering a comforting weight and texture, while ensuring an environmentally responsible product.
- Ergonomically Designed for Easy Use: The microwave heating pad features an innovative double-handle design, enabling you to effortlessly adjust the pad’s position and maintain a secure grip for precise, targeted pain relief.At the same time,this microwavable heating pad features a 33*5.9 inches size, allowing it to nicely hug your neck, shoulders, and back.
Fragrance-Free Relief
SacksyThyme Microwave Heating Pad for Cramps, Back, Neck, Shoulders, Leg Pain – Reusable Heat Pack, Hot Moist Microwavable Therapy Pack – Unscented Flaxseed Hot Compress Made in USA (Size: 12″ x 7″)
Sacksy Thyme
- SOOTHING HEAT IN MINUTES: Designed specifically to target cramps, our heating pad is the ideal choice for easing back, neck, menstrual or muscle cramps, leg & shoulder pain. Simply heat it in the microwave for two minutes, and enjoy a blissful 20-30 minutes of moist heat per use. It’s a convenient and effective alternative to traditional remedies.
- EXCELLENT QUALITY: Our heating pad offers the flexibility of being unscented, catering to those who prefer a fragrance-free experience. It contains no essential oils or herbal solutions. However, if you desire an aromatherapy effect, you can easily add your favorite essential oil to the pad before microwaving. Additionally, the pad is made from 100% natural flaxseed, providing a soft and comforting texture that promotes relaxation.
- SOOTHING PAIN: Whether you’re dealing with muscle pain due to overexertion from exercise or the strain of working too hard, our versatile heating pads provide the perfect solution. With their ability to deliver comforting warmth, they serve as an effective warm compress, offering relief whenever and wherever you need it. Additionally, if you prefer cold therapy for injuries, bruises, or swelling, simply throw our cooling pad in your freezer. It’s perfect for joints, muscles, and cramps!
- HOW TO USE: Warm the pad in the microwave for 90 seconds while monitoring the temperature for desired heat. Prevent overheating by ensuring not to exceed 2 minutes per session. Allow the pad to cool down entirely before reheating. Before applying it to the body, check for any hot spots. If you prefer cold therapy for injuries, bruises, or swelling, just place our cooling pad in the freezer prior to use. It works wonders for joints, muscles, and cramps!
- WEIGHT AND COMFORT: Carefully crafted with dimensions of approximately 12″ wide x 7″ long and a weight of approximately 2.2 lbs, this exceptional pad is the perfect balance between size and weight. Contrary to the notion of traditional lightweight products, our heating pad offers a comforting density that aids in stress relief. Proudly Made in the USA, our commitment to quality extends beyond design, ensuring an unmatched experience of both convenience and effectiveness.
Slim Flexible Therapy
MEISENHOME Microwave Heating Pad for Pain Relief, 8 x 18 Microwavable Moist Heat Pads for Neck, Shoulder, Back, Knee, Period Cramps, Rice Heat Pack Hot & Cold Compress Reusable & Portable, Grey
MEISENHOME
- 【Pain Relief & Relaxation】：Choose MEISENHOME microwavable heating pad to relax and relieve pain for your health care. Our cordless heating pad is filled with 100% natural herbs and flaxseeds, which provides deep moist heat and promote blood circulation, help to moderate joints pain, period cramps, stiffness, muscles, tightness, swelling, and inflammation, or get relaxed during meditation or taking a rest.
- 【Flexible Heating Pad】：The rectangular rice heating pad measures 8 inches wide and 18 inches long. Soft minky material and unique sectioned chamber stitching is able to fit on most of your body parts, including your neck, shoulders, back, arms, leg, ankle, and knee, etc. Great help with acute and chronic pain relief.
- 【Hot & Cold Compress】: Microwave the heat pad for 60s and you can enjoy 20 min soothing moist heat therapy to reduce inflammation, stress, tension, and pain by promoting circulation. Cool the shoulder heating pads microwave in freezer to get a pleasant coldness to reduce swelling due to strains and sprains.
- 【Various Application】：Our heating pad microwavable for pain relief is suitable for various occasions, such as use it on the bed, sofa, chair, couch. Besides home, you can also use it outside, like in the park, office room, and more.
- 【Great As Gift】:This rice heat pack microwavable is an Ideal Gift for women thanks to its elegant color and practicality. Great for Birthday days, Mother’s Day, Fathers’ Day, Christmas, and New Year. Your satisfaction is our 1st priority, please feel free to reach us if have problems with our moist heating pad microwavable.
Lavender Aromatherapy Warmth
SacksyThyme Microwave Heating Pad for Back, Neck, Menstrual Cramps, Shoulders, Leg Pain Relief – Hot Moist Microwavable Therapy Pack – Flaxseed Hot & Cold Pad Made in USA (Size: 12 x 7) Lavender
Sacksy Thyme
- LAVENDER AROMA: Introducing our exquisite LAVENDER aroma option, now available alongside our popular UNSCENTED filler. Take a moment to carefully select your preferred choice. Experience the blissful benefits of aromatherapy with our remarkable heating pads, specially designed for your comfort. Additionally, the pad is made from 100% natural flaxseed, providing a soft and comforting texture that promotes relaxation.
- SOOTHING PAIN: Whether you’re dealing with muscle pain due to overexertion from exercise or the strain of working too hard, our versatile heating pads provide the perfect solution. With their ability to deliver comforting warmth, they serve as an effective warm compress, offering relief whenever and wherever you need it. Also, if you prefer cold therapy for injuries, bruises, or swelling, simply keep our cooling pad in your freezer. It’s perfect for joints, muscles, and cramps!
- HOW TO USE: To utilize, warm the pad in the microwave for 90 seconds while monitoring the temperature for desired heat. Prevent overheating by ensuring not to exceed 2 minutes per session. Allow the pad to cool down entirely before reheating. Before applying it to the body, check for any hot spots. Moreover, if you prefer cold therapy for injuries, bruises, or swelling, effortlessly place our cooling pad in the freezer. It works wonders for joints, muscles, and cramps!
- WEIGHT AND COMFORT: Carefully crafted with dimensions of approximately 12″ wide x 7″ long and a weight of approximately 2.2 lbs, this exceptional pad is the perfect balance between size and weight. Contrary to the notion of traditional lightweight products, our heating pad offers a comforting and reassuring density that aids in stress relief. Proudly Made in the USA, our commitment to quality extends beyond design, ensuring an unmatched experience of both convenience and effectiveness.
- CUSTOMER SATISFACTION GUARANTEED: Our top priority is ensuring your happiness. With our unwavering commitment to customer satisfaction, we proudly provide a 1-year Manufacturer’s warranty. If, for any reason, you are not completely satisfied with your purchase, we offer a hassle-free money-back guarantee. We have full confidence in the exceptional quality and premium materials of our products.
Lavender Scented Relief
SacksyThyme Microwave Heating Pad for Back, Neck, Menstrual Cramps, Shoulders, Leg Pain Relief – Hot Moist Microwavable Therapy Pack – Flaxseed Hot & Cold Pad Made in USA (Size: 12 x 7) Lavender
Sacksy Thyme
- LAVENDER AROMA: Introducing our exquisite LAVENDER aroma option, now available alongside our popular UNSCENTED filler. Take a moment to carefully select your preferred choice. Experience the blissful benefits of aromatherapy with our remarkable heating pads, specially designed for your comfort. Additionally, the pad is made from 100% natural flaxseed, providing a soft and comforting texture that promotes relaxation.
- SOOTHING PAIN: Whether you’re dealing with muscle pain due to overexertion from exercise or the strain of working too hard, our versatile heating pads provide the perfect solution. With their ability to deliver comforting warmth, they serve as an effective warm compress, offering relief whenever and wherever you need it. Also, if you prefer cold therapy for injuries, bruises, or swelling, simply keep our cooling pad in your freezer. It’s perfect for joints, muscles, and cramps!
- HOW TO USE: To utilize, warm the pad in the microwave for 90 seconds while monitoring the temperature for desired heat. Prevent overheating by ensuring not to exceed 2 minutes per session. Allow the pad to cool down entirely before reheating. Before applying it to the body, check for any hot spots. Moreover, if you prefer cold therapy for injuries, bruises, or swelling, effortlessly place our cooling pad in the freezer. It works wonders for joints, muscles, and cramps!
- WEIGHT AND COMFORT: Carefully crafted with dimensions of approximately 12″ wide x 7″ long and a weight of approximately 2.2 lbs, this exceptional pad is the perfect balance between size and weight. Contrary to the notion of traditional lightweight products, our heating pad offers a comforting and reassuring density that aids in stress relief. Proudly Made in the USA, our commitment to quality extends beyond design, ensuring an unmatched experience of both convenience and effectiveness.
- CUSTOMER SATISFACTION GUARANTEED: Our top priority is ensuring your happiness. With our unwavering commitment to customer satisfaction, we proudly provide a 1-year Manufacturer’s warranty. If, for any reason, you are not completely satisfied with your purchase, we offer a hassle-free money-back guarantee. We have full confidence in the exceptional quality and premium materials of our products.
Dual‑Side Comfort
Microwave Heating Pad 6 x 12 Heating Pad Microwave, Microwave Bean Bag Heating Pad for Neck and Shoulders, Moist Heat Pack Pillow Warm Compress for Muscles, Joints, Abdomen (Dark Gray) – 2 Pack
MORLIDEN
- 【2 PCS Natural Fillers Heating Pad Microwavable】 Moist microwavable heating pads is suitable for multiple parts of the body such as neck, shoulder, knee, elbow, ankle, waist, back, instep, abdomen, etc.
- 【Double Side Fabric Design Microwave Heating Pad】The heat can be evenly distributed on the bean bag and maintain long-lasting heat. Thanks to the interval cell design, it can be well fixed in the position of the filling. Super soft dutch velvet on one side to gently hug your skin and provide moist warmth, while the striped corduroy on other side give you a different comfortable touch.
- 【Moist Heating Pad Microwavable with Natural Material】Microwave heating pad is filled with flaxseed, millet, clay beads that are unscented and retain heat more durable and effective, providing longer comfortable when heated.
- 【Hot & Cold Compress Bean Bag】6″ x 12″ microwave heat pad is suitable for most of your body parts, it can cover the areas where you need heat and keep warm. Hot pack only needs to be safely heated to enjoy 15-20 minutes of moist heat compress. Freeze the pad in freezer for 4 hours to easily relieve body parts.
- 【Best Intimate Gift】Microwavable heating pads that cover your body to offer you the most effective relax. Absolutely the best gift in Father’s Day, Mother’s Day, Christmas Day, and some special one’s Birthday.
Orange Aromatherapy Wrap
Bed Buddy Aromatherapy Heat Pad and Cooling Neck Wrap – Microwave Heating Pad for Sore Muscles – Cold Wrap Pack for Aches and Pain, Lavender Scent
Carex
- Contains (1) Bed Buddy Heat Wrap / Cold Aromatherapy Wrap. A microwave heating pad that provides moist heat. A flexible neck heating pad with a form-fitting design and a fabric cover. Filled with 100% organic material for neck pain & back pain relief.
- The aromatherapy orange scented wrap is a heating pad for neck and shoulders as well as a cold pack for relieving aches and pains in muscles and joints. Wrap is a moist heating pad as recommended by doctors, a natural alternative, complement to OTC drugs
- The flexible form-fitting hot cold pack easily conforms to the shape of your body even when cold. Wrap the reusable wrap around sore joints or muscles for targeted therapeutic effect with the warming or cooling relief similar to electric heating pads.
- Filled with 100% natural grains herbs & flowers, the hod pad / cold pad conforms to your body for targeted relief of neck pain, shoulder pain, knee pain, or back pain. Use the aromatherapy wrap for pain relief, neck warmer, or for a neck ice pack.
- Bed Buddy, by Carex, has been a leading manufacturer of heating pads for back pain and microwavable heating pads. Trust Bed Buddy as a partner to assist you with neck pain relief or simply therapeutic relief from muscle pain.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Buying Guide
FAQs
What filler materials are used in microwave heating pads and which one gives the best moist‑heat performance?
Common fillers include natural flaxseeds, millet, sorghum, corn, and clay beads. Flaxseed and millet retain heat longest and release a gentle, moist warmth, while corn heats quickly but may cool faster. Clay beads add weight without overheating, and a blend of flaxseed, millet, and clay (as in the REVIV and COMOIL pads) typically provides the most consistent moist‑heat therapy.
How does the size of a heating pad affect comfort and coverage for different body parts?
Extra‑large pads like the REVIV XXL (approximately 33 × 6 inches) can wrap the entire back, shoulders, or legs, offering broad coverage for chronic pain. Compact pads (10 × 7 inches) such as the B0B861HC5Z model are ideal for targeted areas like the neck, knees, or wrists. Choose a larger size for full‑body relief and a smaller size for precise, portable therapy.
Is a removable, machine‑washable cover worth the extra cost?
Removable covers, found on pads like the B0B861HC5Z and MEISENHOME, make cleaning easy and keep the fabric fresh, which is important for hygiene after repeated use. They also add a layer of softness, often using cotton or velvet, enhancing comfort against the skin. If you plan frequent use or have sensitive skin, a washable cover is a valuable feature.
Do I need a heating pad that offers both hot and cold therapy?
Pads that support hot‑and‑cold therapy, such as the REVIV and SacksyThyme models, let you switch between soothing heat and refreshing cold compresses, helping with inflammation as well as muscle relaxation. Cold therapy is especially useful after workouts or injuries to reduce swelling. Having both options in one pad adds versatility without purchasing separate products.
How important is the weight of a heating pad for therapeutic pressure?
Weighted pads (around 2–2.5 lb) provide gentle, even pressure that enhances blood flow and deep tissue relief, as seen in the corn‑filled B0B861HC5Z and the flaxseed‑filled SacksyThyme pads. Lighter pads may feel less secure and offer less pressure, which can reduce effectiveness for back or shoulder pain. If you prefer a firm, grounding sensation, opt for a heavier, weighted design.
What fabric materials give the best skin‑friendly experience?
Soft, breathable fabrics like Minky, Dutch fleece, velvet, and cotton are common; they prevent irritation and feel luxurious against the skin. The REVIV pad uses a skin‑friendly Minky/Dutch fleece blend, while the COMOIL pad features marsha velvet for a plush touch. Choose a fabric that matches your sensitivity and preference for a comfortable, slip‑free fit.
Are aromatherapy‑infused heating pads worth considering?
Aromatherapy pads, such as the lavender‑scented SacksyThyme options, combine heat therapy with soothing scents that can enhance relaxation and stress relief. The fragrance does not affect heat performance, but it adds an extra sensory benefit for those who enjoy scented products. If you prefer an unscented experience, most pads also come in a fragrance‑free version.
Which heating pad offers the best overall value for price and durability?
Pads that combine multi‑section construction, durable natural fillers, removable covers, and a warranty—like the REVIV XXL and MEISENHOME models—provide strong long‑term value. They balance size, weight, fabric quality, and hot‑cold versatility while often including a 1‑year guarantee. Assessing these features against the price helps ensure you get a reliable, lasting product.