OPICEBINJL Cooling Towels 4 Pack Ice Towel How to use it? 1. Simply "wet it" , "wing it" and "snap it". 2. When the towel is wet, it will be extremely cooler than the outside air, thereby providing cooling effect. 3. When it starts to dry out after using, simply re-wet, re-wing and snap it. 4. Wet it with ice water to further enhance the cooling effect. Soft Breathable Chilly Towel What is the principle? 1.The super absorbent fiber weave technology of the mesh towel regulates the water inside and ensures water retention, so it's treating it kind of like an air-conditioner, and within seconds you get cooler. 2.Like sweat on you skin, when water evaporates it cools. Any ole cotton or microfiber towel would work, but not as well design to maximize evaporative cooling or comfort. 3.If you are sweating a lot, rinse the 'salty water' out from time to time. Salt reduces evaporation/cooling rate. fever or headache relief, heatstroke prevention, sunscreen protection. sports enthusiasts outdoor workers Applicable Occasions : Sports & exercise: running, trekking, camping, hiking, backpacking, cycling, racing, bowling, yoga, golf, fitness, fishing, swimming, basketball, football, rugby, softball, baseball, tennis, volleyball, hockey, boxing, traveling, climbing, cheerleading, weightlifting, rowing, shooting, beach, etc.