Features of the Buff CoolNet UV+ MFL Insect Shield Headwear 95% REPREVEA(R) Polyester made from recycled water bottles Built-in Insect ShieldA(R) Protection(TM) repels mosquitos, ticks, ants, flies, chiggers, and midges UPF 50+ sun protection HeiQ cooling Technology PolygieneA(R) odor control 4-Way ULTRA STRETCH 100% seamless Lightweight