Gobi APS HELLY TECH® is a versatile, breathable and quick-drying all-purpose shoe featuring our HELLY TECH membrane for waterproof performance. This nimble and stable approach shoe offers great traction, cushioning, and support. Fiber Content Outer: textile / synthetic Lining: mesh Sole: rubber Features Upper: HH® Max-Vent, HH® Quick Dry, HH® Lite-Frame, Flowknit, HH® Pro Guard Midsole: HH® Power-Stride, HH® Max-Comfort Insole, Antimicrobial Outsole: HH® Max-Grip, HH® Tough-Wear Performance Windproof: Slightly windproof - 13-30 CFM Breathable and wind resistance for hiking use Waterproofness: High waterproofness - Waterproofness range is Helly Tech Performance range 10000 to