exclusive Tek2.5 technology and sneaker-like comfort, for fun on and off the trail Weight: 1 lb. 11 oz. per pair Breathable polyester mesh upper with TEK2.5® waterproof membrane to keep feet dry. Lace-up style for a custom fit (laces not waterproof). Nylex lining. Heel and toe bumpers add durability. Trail Trac rubber outsole features a versatile lug pattern for traction on a variety of surfaces.