Men's UA Storm ColdGear&reg; Infrared Golf Insulated Jacket Body: 100% Polyester, Insulation: 100% Polyester, Panels: 7.4 oz. 94% Polyester/6% Elastane 100g Primaloft insulation is light, breathable & can be compressed without losing warmth. ColdGear Infrared uses a soft, thermo-conductive inner coating to absorb & retain your own body heat. Body: 100% Polyester; Insulation: 100% Polyester; Panels: 7.4 oz. 94% Polyester, 6% Elastane. Hollow-fiber side panels stretch. UA Storm gear uses a DWR finish to repel water without sacrificing breathability.