Waterproof membrane seals out water and lets moisture escape. Pig suede leather and breathable mesh upper. 100% recycled laces and webbing. Bellows tongue keeps out debris. Protective and abrasion resistant rubber heel and toe cap. 100% recycled breathable mesh lining. Kinetic Fit™ ADVANCED removable contoured footbed with reinforced heel cushioning for medium support. Molded nylon arch shank. Lug - 5mm. 1lbs-12.9oz, 820g