Flexibly provides hot and cold therapy - heat in microwave and cool in freezerFilled with unscented, all-natural flaxseed pack Offers natural pain relief for cramps, injuries, swelling, soreness and more Supports effective relief for the neck, lower back joint and injuries Provide relief for period cramps, headache, migraine, swelling, & inflammation TruHealth Weighted Hot and Cold Body Wrap for Full Body Pain Relief is a large, unscented microwavable heating pad effective in providing quick neck, back or shoulder pain relief. It is designed with weighted technology to alleviate pain by improving blood circulation and reduce swelling. This full body heating pad serves both as a heat wrap for shoulder heating for example, or an as ice pack for back. To use it as a hot compress, warm the neck and shoulder heating pad and microwave for 30-40 seconds. For a cold compress place the pack in the freezer for at least 1 hour. The extra-large sized microwavable heat pad makes it easy to reach over bigger and multiple areas such as back and shoulders or stomach and groin. Flaxseed fill provides weight and holds heat exceptionally well. You can use as a moist heating pad which is also unscented and has a beautiful soft fabric cover that feels lovely on the skin. Expect calming, soothing, therapeutic relief for period cramps, headache, swelling, body stress, and inflammation as well as other aches and pains.