From company website: 64% Cordura® / 26% nylon 66 / 10% spandex Machine wash cold. Hang dry. Imported. The Florence F1 Cordura Utility Short is our most functional short ever. Made with 4-way stretch CORDURA® fabric – a high-tensile strength nylon that’s both tough and lightweight – these have more body than our standard boardshorts helping them drape well. Added details like front slash zip pockets and a contrast plier utility pocket on the side panel keep tools close at hand. CORDURA® fabric has served those demanding the most from their garments – from alpinists to the military – for generations. As a boardshort material, it provides a tough exterior for the days we're working, but enough stretch and softness to keep us chafe-free after hours of hard output.