---
product_id: 19377083
title: "SunnyBay Microwave Heating Pad, Microwavable Moist Hot or Cool Bean Bag Wrap for Neck, Shoulder, Knee, or Back Pain with Fastening Straps, 10x18 Inch Heating Area, 2.8 Lbs, 58 Inches"
brand: "sunnybay"
price: "¥20862"
currency: JPY
in_stock: true
reviews_count: 10
category: "Sunny Bay"
url: https://www.desertcart.jp/products/19377083-sunnybay-microwave-heating-pad-microwavable-moist-hot-or-cool-bean
store_origin: JP
region: Japan
---

# ergonomic moldable flaxseed fill 2-min microwave heat-up dual hot/cold therapy SunnyBay Microwave Heating Pad, Microwavable Moist Hot or Cool Bean Bag Wrap for Neck, Shoulder, Knee, or Back Pain with Fastening Straps, 10x18 Inch Heating Area, 2.8 Lbs, 58 Inches

**Brand:** sunnybay
**Price:** ¥20862
**Availability:** ✅ In Stock

## Summary

> 🔥 Melt away pain, chill inflammation — your all-in-one wellness wrap!

## Quick Answers

- **What is this?** SunnyBay Microwave Heating Pad, Microwavable Moist Hot or Cool Bean Bag Wrap for Neck, Shoulder, Knee, or Back Pain with Fastening Straps, 10x18 Inch Heating Area, 2.8 Lbs, 58 Inches by sunnybay
- **How much does it cost?** ¥20862 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/19377083-sunnybay-microwave-heating-pad-microwavable-moist-hot-or-cool-bean)

## Best For

- sunnybay enthusiasts

## Why This Product

- Trusted sunnybay brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Fast & Easy Prep:** Ready in just 2 minutes with simple microwave instructions—heat, flip, and go.
- • **Generous Coverage:** 10x18 inch heating area ensures maximum muscle coverage for deep, soothing relief.
- • **Wrap-Around Relief:** Ergonomic design with fastening straps for targeted neck, shoulder, back, or knee pain relief.
- • **Natural Moldability:** Filled with US-grown flaxseeds that conform perfectly to your body’s contours for personalized comfort.
- • **Dual Hot & Cold Therapy:** Microwavable moist heat or freezer-cold compress for versatile inflammation and pain management.

## Overview

The SunnyBay Microwave Heating Pad is a versatile 10x18 inch therapeutic wrap filled with US-grown flaxseeds, designed for drug-free relief of musculoskeletal pain. It offers dual hot or cold therapy with easy 2-minute microwave heating and adjustable fastening straps for secure, ergonomic fit on neck, shoulders, back, or knees. Ideal for millennials seeking natural, convenient pain management that fits an active lifestyle.

## Description

desertcart.com: SunnyBay Microwave Heating Pad, Microwavable Moist Hot or Cool Bean Bag Wrap for Neck, Shoulder, Knee, or Back Pain with Fastening Straps, 10x18 Inch Heating Area, 2.8 Lbs, 58 Inches : Health & Household

Review: The best microwave heating pad - This is by far the best microwave heating pad! The heat stays and it’s very therapeutic! It’s soft and conforms to your body. The pad has straps so it can be tied around your waist and shoulders. Not only can this be used as a heating source but can be used as a cold compress by placing it in the freezer. I have purchased 3; one for myself, one for my husband and daughter. I highly recommend!
Review: Perfect sized sandbag - The 4lb lava sandbag is amazing. The lava sand comes from Utah which is pretty cool. The sandbag hears extremely well and holds its heat for over 20 minutes. I’ve used it on shoulder pain and I love the way this sandbag is wide enough to really cover the area needing it. My daughter loves to use it at night which leads to the dog hair on it like in the picture. Good thing is it washes easily and has no problems after that. Great value!

## Features

- WRAP-AROUND PAIN RELIEF PAD: Standing out from other neck, shoulder, and lower back pain relief products with its ergonomic design, longevity, and ease of use, our wearable therapeutic beanbag wrap offers drug-free management of musculoskeletal aches, stiffness, sprains, and strains.
- 2-IN-1 HOT/COOL PACK: Apply frozen as a cool compress over inflammation or use heated as a back, knee, shoulder, or neck warmer. Microwavable heating pads for neck and shoulders or cool packs for bruises or swelling, our multipurpose non electric pads are effective either way.
- WIDE HEATING AREA: The 10x18 inch dimensions enable maximum coverage, whether used as a heated neck and shoulder wrap, over the back or abdomen for muscle pulls, cramps, or period relief, or around the knee for arthritis pain, effectively targeting your sore spots.
- SIMPLE TWO-MINUTE PREPARATION: Preparing a lower back heating pad has never been easier! Warm it in the microwave for a minute, flip over and heat for 30 more seconds, then use. If more warmth is desired, microwave in 10-second intervals. Avoid heating over two minutes before a single use to prevent burning
- MOLDABLE FLAXSEED FILLING: Stuffed with US-grown human-grade flaxseeds for ideal moldability, the form-conforming beanbag pad hugs your contours, fitting perfectly anywhere you need. Rest your head back and use as a neck heating pad for neck pain, wear over the shoulders for rotator cuff injuries, or tie around your waist for back or abdomen discomfort.
- HEATING INSTRUCTIONS: Microwave for 2 minutes. Fold the pack properly and ensure it is not touching the sides of the microwave. Flip the pack after 1 minute for even heating. Note that new packs may take longer to heat up due to moisture in the fresh seeds. Do not exceed 3 minutes of heating time.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B008TUSTTC |
| Best Sellers Rank | #88,234 in Health & Household ( See Top 100 in Health & Household ) #122 in Microwavable Heat Pads |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,637) |
| Date First Available  | March 18, 2015 |
| Is Discontinued By Manufacturer  | No |
| Item model number  | hp-lowback-large |
| Manufacturer  | Sunny Bay |
| Product Dimensions  | 58 x 9 x 1 inches; 1.5 Pounds |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** SunnyBay
- **Number of Items:** 1
- **Special Feature:** Microwaveable
- **Unit Count:** 1.00 Count

## Images

![SunnyBay Microwave Heating Pad, Microwavable Moist Hot or Cool Bean Bag Wrap for Neck, Shoulder, Knee, or Back Pain with Fastening Straps, 10x18 Inch Heating Area, 2.8 Lbs, 58 Inches - Image 1](https://m.media-amazon.com/images/I/71EOMRTTL0L.jpg)

## Questions & Answers

**Q: How long does it last for the hear to run out**
A: You determine how hot it is at the start by how long you heat in the microwave.  I heat for 2 1/2 minutes and then it lasts for a good 30-40 minutes

**Q: Does this fall down with the tie around? I have one that velcro on and never falls down but I need a back-up one.**
A: This tie can hold the heat wrap's weight very well.  The tie won't stick to your nice clothing either.  You will be happy with this heat wrap.  Before we fill it with flax seeds, the heating area is 22 inches long.  After filling, it became smaller.  It still measures 18 inches wide and 10 inches tall.  It is the biggest portable moist heat wrap available.  High quality too.  If you take care of it, it can last you many years.
Best wishes,
Sharon

**Q: how big does microwave have to be to hold this heating pad?**
A: Most microwave can hold it.  Try to fold it so it doesn't block the turn table.
Thanks,
Sharon
Biomed DB Design, LLC

**Q: Can it be washed?**
A: No this one cannot be washed.  The gel hot and cold wrap has the same size and it has a cover that can be washed.
https://www.amazon.com/gp/aw/d/B072Z272P3/ref=mp_s_a_1_15_a_it?ie=UTF8&qid=1531234947&sr=8-15&keywords=Sunny+Bay
Thanks
Sharon
Biomed DB Design, LLC

## Customer Reviews

### ⭐⭐⭐⭐⭐ The best microwave heating pad
*by M***I on January 7, 2026*

This is by far the best microwave heating pad! The heat stays and it’s very therapeutic! It’s soft and conforms to your body. The pad has straps so it can be tied around your waist and shoulders. Not only can this be used as a heating source but can be used as a cold compress by placing it in the freezer. I have purchased 3; one for myself, one for my husband and daughter. I highly recommend!

### ⭐⭐⭐⭐⭐ Perfect sized sandbag
*by D***. on April 25, 2025*

The 4lb lava sandbag is amazing. The lava sand comes from Utah which is pretty cool. The sandbag hears extremely well and holds its heat for over 20 minutes. I’ve used it on shoulder pain and I love the way this sandbag is wide enough to really cover the area needing it. My daughter loves to use it at night which leads to the dog hair on it like in the picture. Good thing is it washes easily and has no problems after that. Great value!

### ⭐⭐⭐⭐ Easy to use for comfortable, secure heat for my back.
*by A***R on November 14, 2019*

I have a strained back and I get temporary relief from using this heat pad. It is easy to use, provides a comfortable, long lasting heat and it is easy to secure around my back. I am using it several times a day for 20 minutes each time. Nice to know that it is quickly available. I am prone to back problems, usually due to overuse. Great pad to add to my bag of relief solutions. Retired PT in Florida

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-08*