Ultra-light SUPERCRITICAL foam cushion midsole designed by BRANDBLACK for Vibram High traction Vibram rubber outsole and shank for mid-foot support Ultra-light breathable mesh upper for comfort and strength Internal lining and padded collar area for maximum comfort SOLE UNIT Super-Critical Jetlon Mechanically foamed process midsole. New compoundhas radical formulation allowing for substantial weight savings & Incredible Bounce 18MM X 25MM stack heights (6MM drop) VIBRAM outsole 10 OZ in a men’s 9 UPPER 3 Layer Ultra Light & Strong Fused Upper Breathable Retro Inspired 21st century technology air mesh upper No-Sew Ultra Light & Thin 0.3MM TPU Reinforcements Hybrid sock Upper combines the security and comfort of a sock construction with the ease of a traditional tongue Suede Toe-Cap & Heel Counter for increased Durability & Comfort