The three-layer, breathable-waterproof shell membrane will keep you dry . . A soft, stretch-knit backer made from recycled polyester feels soft and warm against the skin. Inner thigh vents provide extra ventilation, integrated grippy elastic leg gaiters keep snow at bay and ensure a seamless fit with various styles of boots, and reinforced kick patches at the hem add an extra level of durability to these high wear areas. Breathable Waterproof FUTURELIGHT The innovative FUTURELIGHT technology is created through nanospinning. Tiny high-performance polyurethane fibers make the material extremely breathable, waterproof, windproof, hard-wearing and soft to wear. AQUAGUARD Aquaguard zips have a PU coating applied to the front side of the zip tape. This allows the zip coil to remain on the inside and prevent the intrusion of water. Chimney Venting With Chimney Venting technology, ventilation openings on the outside of the thigh ensure that warm air can escape from the shoe. Thanks to mesh inserts, no snow can get into your trousers from the outside.