Hot & Cold Compress: Heat the rice heating pad in the microwave for 60~90 sec! You will enjoy up to 20 min soothing and deep moist heat. Freeze the microwave heating pad for neck and shoulders to get a pleasant coldness to reduce swelling due to strains and sprains. (DO NOT OVERHEAT). Double-Side Fabric Design: This rice bag heating pad designed with Double-side fabric is skin-friendly even for sensitive users. One side made of Minky is ultra-soft to skin, while the other side made of Dutch Velvet is silky with extra heat retention. Unique sectioned chamber stitching of this neck warmer microwavable heating pad mold into your body flexibly, delivering more even and long-lasting heat for instant pain relief and relaxation. Versatile and Flexible: This rice bags for heat therapy is so soft and flexible to conform to your body, delivers soothing heat therapy to your neck, shoulders, back, arms, leg, ankle, and knee, etc. Great help with acute and chronic pain relief. Microwave heat pad for pain relief safely to obtain soothing moist heat therapy to reduce inflammation, stress, tension, and pain by promoting circulation. Lavender heating pad microwavable: Unlike other microwavable heating pads, our rice heating pad microwavable filled with lavender, flaxseed, millets, and clay beads delivers deep, penetrating moist heat and promote blood circulation, help alleviate joints, cramps, tightness, arthritis, swelling. A relaxation gifts providing gentle pressure with soothing moist heat and mild lavender scent.