Atacama Men Birko-Flor in Color Futura Black | BIRKENSTOCK US。Tatacoa CE | Waterproof | Birko-Flor | Futura Black Description from Birkenstock The BIRKENSTOCK Tatacoa - 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®.\" -BIRKENSTOCK US 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; back strap “Made in Germany\"