With a durable microfiber upper for comfort & fit & incorporating a host of advanced protective features, inside & out, the SMX-S Boot features an ergonomic forefoot shaping, a breathable lining & Alpinestars’ exclusive rubber compound sole for optimized levels of support & performance. Features Durable microfiber upper construction offering superb levels of flexibility & comfort Ergonomic new last for forefoot streamlining to enable greater precision on the bike’s controls & for superior, wide-ranging foot profile, fit & comfort New, ergonomically optimized TPU shin plate protector is racederived for superior impact & abrasion resistance Lateral TPR-injected ankle support construction offers optimized levels of protection & stability TPU double density ankles protectors are layered under the upper in both lateral & medial side for excellent all-round levels of protection Breathable textile interior lining features anti-sliding suede reinforcement on heel area Int...