The classic straps are synthetic PU with a synthetic mesh lining that helps to wick away moisture and keeps your feet fresh. Compression molded EVA footbed. Spenco's proven TOTAL SUPPORT® Contour. Deep heel cupping. Orthotic-grade arch support. Metatarsal dome. Cushioned forefoot. Lightweight, two-part outsole. 5 heel lift for maximum comfort. Non-slip, non-marking outsole. Antimicrobial helps control odor. Color: blue