The Cottonwoods are our most sustainable hiking boots to date. Each hiking shoe features numerous 100% recycled elements including the upper and lining, along with a bio-based I&';m Green Sugarcane EVA midsole, and a PFAS-Free DWR finish. That should provide some bonus smiles with every mile. Fit Notes We use our own gender-specific lasts to address the anatomical nuances between different types of feet. Length runs true to size. Form hugging heel cup, sculpted mid-foot, and a generous forefoot & toe box. Technical Specifications Width Standard Width - Men&';s standard width is C in the heel and D in the forefoot (according to Brannock DeviceA(R)). Patterns and materials in a given model may influence fit. We always recommend trying our footwear on to ensure the best possible fit. Volume Standard - Medium-High volume feet tend to be wider with higher arches and insteps. Upper Material LWG Gold ISA LITE Nubuck Leather Abrasion-resistant mesh PFC-free DWR finish Recycled laces and webbing Weight 14.9 oz / 422g Heel Drop 8 mm