Therapy Hot / Cold water bottle

 lovely design, high quality polyester cotton material, the surface is fine and glossy, the edge is smooth and smooth. The rotatable lid is easy to use, and the cold and hot dual-use is very practical. Stays cold much longer than gel packs, or other cold packs. Suitable for sport injury and first aid. It's superior quality material and leak proof design ensures the injured area remains dry and provides you with needed relief. Very cold therapeutic application to help relieve pain and minor bruises, contusions, sore muscles, sprains, and strain swelling. Can also be used for hyperthermia, just heating the water (not boiled) to help relieve stomach upsets, migraines, sinus and joint pain.