Castle Surge Snowmobile Pants - Black - X-Large Soft-Touch ultra tough nylon shell. Critical seams sealed. 500D Airdura reinforcements on seat, lower legs and cuffs Comfort-Flow polyester mesh lined Windproof/waterproof/breathable construction incorporates Ven-Tex 2.0 laminated membrane system Micro-fleece insert in seat/upper leg area for increased comfort