The soles of Grisport footwear are the results of incessant study on the morphology off the foot and feature a unique anti-torsion system that ensures better ankle support with a stable and enveloping grip. Hard on the inside for better stability, flexible, light and highly abrasion-proof on the outside. UPPER - The substantial thickness of the waxy cow grain leathers guarantee that Grisport footwear is resistant to wear and tear, leather collar and flex point. LACING - speed-fastening articulated shock resistant hardware in lightweight non Ferris metal featuring a hook system that locks in while lacing up the boot. Anti-Tendonitis is specifically designed to provide relief around the Achilles region. This design feature greatly increases comfort be reducing unwanted friction around the heel. LINING - AT 488 mesh lining made of tear and abrasion - resistant moisture management mesh that is very breathable. It creates an air circulation effect throughout the 3D air space. SOLE - Exclusive three density Vibram outersole ensures optimum levels of grip with a light ?weight PU midsole for maximum shock absorption and durability. R System - Rigid, torsion-proof arch support made of nylon placed between the PU and the rubber ensures improved torsional stability when Hiking or Trekking. Membrane - Spo-Tex® original waterproof linings. Rain and snow cannot get in, but because of its poromeric structure perspiration can escape through thousands of tiny micropores, so your feet will stay warm and dry, no matter how cold an wet it is outside.