Under Armour Men's Storm Timbr Insulated Jacket 100% Polyester Imported UA Storm technology repels water without sacrificing breathability 100% waterproof & breathable, with fully taped seams 10k/10k Rating PrimaLoft insulation is lightweight, water-resistant & breathable, with the ability to be compressed without losing warmth Strategic 80g body/60g sleeve insulation keeps you warm where you need it, but removes excess bulk