The YKN Series is one tough footwear you can depend on. Its stylish look, water-friendly feature, and durability make it your perfect partner for everyday life. - The strap is a soft polyester webbing upper that is water-friendly and washable. - Footbed is made out of Tribu's quality molded "Eva" which provides anatomical arch support. - With a durable and grippy white molded rubber outsole. Tough footwear with a secure fit and easy adjustability. Comfort never looked this stylish.