Mission Multi-Cool Cools Instantly When Wet to 30 Degree below average body temperature Helps defend against dust, debris and wind Typically, the multi-cool cools for up to 2 hours when wet, To reactivate, simply re-soak and re-snap Can be worn in more than 12 ways including as a headband, scarf, neck gator, hood, cap, do rag, facemask and more Chemical-free, UPF 50 protection from the sun