A must for warm weather fun; the Essentials Arizona Footbed Sandal from Birkenstock. EVA foam upper in a footbed sandal style with an open toe Slip on entry with adjustable buckle closure straps Buckle hardware detailing Soft lining with a contoured foam cushioned comfort footbed Supportive shock absorbing midsole Flexible traction outsole All Arizona colorways are produced and shipped in a Birkenstock narrow width because they run wide; Birkenstock narrows fit like US Women's medium.