Cool towel Size：30cm*90cm use: 1, work and study: refreshing, eliminate fatigue   2. Excursions: heatstroke cooling, skin care and eye protection   3, physical fitness: cooling sweat, easy and cool   4, heat stroke fever: rapid cooling, analgesic Xingnao   5, lack of sleep: eliminate eye bags, remove dark circles   use 1. For the first time use, immerse the cold belt in tap water. Gently knead the cooled crystal in the middle for seven to eight minutes. This product will expand naturally. 2, remove with a dry towel to dry the surface, the cold belt worn on the neck, head, wrist. 3, cold belt can be used repeatedly. 4. After 12 hours of use, the cold band will return to its original state of use, and it can be stored after drying. It can also be used continuously. Reuse it in water for only one minute