Birkenstock Women's Oita SandalSize Chart The new Oita slide maximizes your comfort with its minimalist friendly design. A double hook and loop closure lets you customize the fit from the inside out. Its suede upper comes together softly over the foot, secured by a nubuck leather strap. The style is grounded in signature BIRKENSTOCK support, with a cork latex footbed that shapes to you with wear. Slip on and go. Contoured cork latex footbed creates custom support with wear Suede