Birkenstock Arizona Eva Multi-Color Slide Sandals in Red / Purple Tie Dye Print An upgrade on the laid-back comfort pioneer, the Arizona Essentials women’s slide sandal by Birkenstock features an EVA footbed with pronounced arch support, a roomy toe box, and a deep heel cup. Two lightweight straps with pin buckles provide an adjustable fit. Synthetic upper Dual buckle straps Contoured EVA footbed Traction outsole Size 38 = US 7 - 7.5