Outer material: 60 percent polyester 40 percent polyurethane. Inner material: 50 percent viscose (bamboo - cellulose) 50 percent cotton, 85 percent polyester 15 percent polyuraehane. Sole: 70 percent ethylene vinyl acetate 30 percent Rubber. Closure type: laces. Heel: flat. Laces, fully lined. Packaging: Box. Experience modern style with the Jonah Runner Black White Trainers by Boss, featuring a unique overlaid logo design and a secure lace-up closure. Key attributes: Black | White | Premium fabric | Lace-up closure | Overlaid logo design | Dimensions & fit: Regular fit | Composition & care: Machine wash cold, tumble dry low.