HELLY TECH® Performance Waterproof, windproof and breathable 2-layer fabric construction 2-way stretch fabric Fully seam sealed PrimaLoft® Black Insulation 60g Fully insulated Durable Water Repellency (DWR) treatment Inner thigh ventilation zippers Articulated knees for optimal mobility Boot gaiters with silicone gripper Reinforcement on bottom leg Dual hand pockets and back pocket Adjustable waist YKK® AquaGuard® water resistant pocket zippers bluesign® fabric As part of the Helly Hansen Ski Free initiative, customers who purchase a pair of these trousers can register for a free days skiing at one of 57 Ski resorts worldwide including Glenshee Ski Centre in the UK. Find out more here:  Helly Hansen Mens Legendary Insulated Pants