Herock Perseus Mens Premium Performance Work Jacket (Breathable, Wind & Water Proof) Polyester, Cotton, Multi-pocket breathable and waterproof jacket with detatchable breathable and windproof bodywarmer. Outer: 65% Polyester 35% Cotton canvas water repellent surface coating. Reinforcement fabric: 100% Polyamide Cordura. Detachable lining: 100% Polyester Acti-Fleece. Inner: 100% Polyester.