Available sizes: 8, 9, 10, 7.5, 8.5, 9.5. Durable leather upper is supportive and light-weight. Memory foam collar and sock liner provides form-fitting comfort and support. Mesh nylon accenting offers reduced weight and increased breathability. Padded footbed provides and patented adiPRENE cushioning insert in the heel provides additional comfort and shock absorption where they're most needed. EVA (Ethylene Vinyl Acetate) underlays for resilient support and impact elimination. Hardy rubber outsole features high-traction tread pattern and forefoot flex grooves for better flexibility.