Sock-like fit: The combination of the adaptive midsole and PRIMEKNIT upper creates a feeling of stepping into a stretchy, breathable and seamless sock that adapts to your foot shape and natural foot expansion. adidas Primeknit upper: adidas Primeknit upper wraps the foot in adaptive support and ultralight comfort; Upper is engineered from heel to toe for unrivalled softness that enhances touch and feel Outer Material: Rubber Sole: Rubber, Ethylene Vinyl Acetate Closure: Lace-Up Heel Type: Flat Shoe Width: Medium GORE-TEX: Performance Comfort membrane. Waterproof and breathable. Abrasion resistant weldings: Protection.. Continental Rubber outsole: Extraordinary traction in wet and dry conditions.. EVA Stabilization frame: For lateral stability and mid-foot support. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Move and explore. These lightweight hiking shoes deliver next-generation comfort and dom of movement for hikes both long and short. The adidas Primeknit upper hugs your foot for flexible, all-terrain stability, while the Boost midsole delivers endless energy to keep you moving up or down the trail. A GORE-TEX membrane sheds water while letting your feet breathe for all-conditions wear.