KAVU River Short Men's Backcountry.com KAVU River Short Men's Backcountry.com Topo Designs River Short Men's Clothing KAVU Men's River Shorts Rhubarb Outsiders Store UK. DESCRIPTION Shorts with pockets, invisible side zip, elasticated waistband. COMPOSITION 100% cotton CARE Handwash with water at 30C with a neutral soap. Wash separately. Do not bleach. Do not dry clean. Do not tumble dry. Iron inside out, and at a low temperature (max. 80C). ORIGIN Fabrics from The Netherlands and Belgium, based on traditional African patterns and culture. Designed and produced in Portugal; Angolan influence concepts.