Birkenstock Unisex Arizona Essentials EVA Sandals are a true classic. The high-quality, odour-neutral EVA is designed to combine numerous positive attributes. Anatomically shaped BIRKENSTOCK footbed in EVA * One-piece EVA upper, lining and sole * Ultra lightweight and highly flexible * Waterproof design Modelled on the cork Sandals, Birkenstock Unisex Arizona Essentials EVA Sandals are made from ultra light and highly flexible EVA. These Sandals are waterproof, ultra lightweight and therefore extremely easy to care for. The deep heel cup moulding provides support for foot tissue and keeps the heel bone in its natural position. This gives the foot nearly as much support when wearing these sandals as when wearing closed shoes. The heel mould also activates the calf muscles, stabilises the back of the foot and improves gait and coordination. The arch supports that run alongside the sides of the footbed surround the tarsal bones, both inside and out. This gives the foot the stability it needs when taking a step. There is also a support that runs through the middle of the footbed, which stabilises the metatarsal bone. This helps ensure that the foot has a naturally straight and solid stance. There are raised indentations at the front of the footbed near the toes. Thanks to the toe grip, the toes remain loose and spread out in their natural position. The indentations also support the natural rolling motion of the toes. The footbed is drawn up especially high at the front. As a result, the high footbed edge protects the toes during the rolling motion of the foot.