Under Armour Gore-Tex Insulator Bib - Men's UA Storm technology repels water without sacrificing breathability GORE-TEX construction is 100% waterproof but remains incredibly breathable Exclusive UA Scent Control technology lasts longer & works better, keeping you undetected ColdGear? Infrared technology uses a soft, thermo-conductive inner coating to absorb & retain your own body heat 100% Polyester