Recycled leather upper Super Stitch thread on upper High abrasion hot melt underlays High abrasion mesh Perforated tongue mesh for breathability EVA Strobel board for added Comfort Impact-ALG™ technology features a polyurethane airbag to provide superior cushioning and impact protection Lightweight high rebound foam midsole for comfort and support Lightweight absorption abrasion-resistant sticky rubber outsole Parametric outsole pattern for tread Composition Upper: Leather (Cow) / Lining: Textile / Outsole: Rubber