The Birkenstock Atacama Crosselement Sandals are a variation of the classic Arizona with an updated Birko-Flor® Futura upper that is skin-friendly and tear-resistant. The pin buckles have been replaced by hook-and-loop fasteners and the heel of the sole has been reinforced for optimum durability. Perfect for all kinds of summer adventures, the polyurethane sole is affixed to the footbed in two layers and therefore offers maximum flexibility and grip too. The polyurethane used is also ultra flexible, water and dirt-repellent.