UPPER: Ultra-soft, water-resistant kangaroo leather with anti-stretch and anti-slip microfiber lining. Last made of nylon and Engage materials. Anatomic, removable insole in cotton and shock absorbing EVA foam. Ergos footbed with shockproof engage material on the surface. Pebax for stability. OUTSOLE: MG with Axeler technology, a threadlike tech alloy in the PU sole. Offers flexibility and stability. For use on firm, natural surfaces. WEIGHT: (9.4 oz.)