Centrus Reusable Hot and Cold Gel Pack can be used to relieves pain due to sprains, injury, joint pain, stiffness, muscle spams/cramps or tension.nThe Hot and Cold Compress Gel Therapy has a unique design allowing the gel pack to be used as one big base for back pain or used individually on your leg, hand, shoulder, finger, eye or glove.nThe Gel Pack is Reusable and Microwavable. It comes with an instruction sheet which makes it very easy to use.nThe Pain Relief Gel Pack also included 1 FREE GLOVE PACK in a different size for a good fit for both male u0026amp; females. NYLON INSERT for the finger is specially designed to avoid direct heat or cold, SPECIAL NYLON COVERING for the eye pack is designed for a good grip and hold around the eye and head area, THE ELASTIC BAND functions to hold the rectangular pack in place as well as tighten the wrist pack for greater relief.nOur Hot Cold Gel Pack is very easy to use. You can either microwave or insert it in hot water. To cool it you can refrigerate or freeze the pack. The Gel pack remains soft on freezing to adjust to any area. The attached Velcro makes it easy to put together or to pull apart.nCENTRUS HOT AND COLD GEL PACK IS DESIGNED FOR PAIN RELIEF TO MULTIPLE MUSCLE AREA SIMULTANEOUSLY. Strenuous activities like sports, exercising, running, lifting, climbing stairs etc. may cause pain, soreness, swelling to different areas of our body, like hands, leg, back, shoulder. Arthritis patients may suffer from joint pain in fingers and knees. Most of the Gel Packs are either designed for a specific area of the body or is just a rectangular gel pack which is expected to be used everywhere. Our Reusable Hot u0026 Cold Multipurpose Gel Pack addresses this problem. This unique product is truly multi-purpose and is designed to be used specifically for each body part. Its award winning design wraps around the affected muscle area thereby maximizing its effectiveness and provides faster relief. NO MORE BUYING SEVERAL GEL PACKS FOR EACH AFFECTED AREA. Taking it a step further, the gel packs can be put together and form one big gel pack to provide relief to larger areas like the back.