Birkenstock Men。Birkenstock Atacama sandals Size 9 featuring blue ombre straps and hook-and-loop fasteners. Brand: Birkenstock Model: Atacama (Adventure Crosscountry) Key Features: Blue ombre Striking blue-to-black ombre finish on the straps with a sleek black footbed and white accents Birko-Flor straps, hook-and-loop fasteners instead of traditional buckles, and a durable polyurethane sole The BIRKENSTOCK Atacama - designed to bring Birkenstock comfort and support to your favorite trail and water based activities. These off-road ready sandals feature a direct attach PU footbed, a rugged PU/TPU outsole for added traction and sturdy hook and loop closures for a secure fit. The upper is made from the skin-friendly, hard-wearing synthetic material Birko-Flor®. Anatomically shaped PU footbed Upper: Birko-Flor® Futura Footbed lining: polyurethane (PU) Sole: light polyurethane sole (PU) Details: two straps, each with an individually adjustable hook-and-loop closures Made in Germany Upper material: Birko-Flor® Birko-Flor® is a skin-friendly, tear-resistant and easy-to-care-for synthetic material which is exclusively used by BIRKENSTOCK. Insole: Polyurethane Polyurethane (PU) is a flexible, water- and dirt-repellent synthetic material which makes footwear easy to care for. Footbed material: Polyurethane Polyurethane (PU) is a flexible, water- and dirt-repellent synthetic material which makes footwear easy to care for. Please see photos for exact details.