Betula Licensed by Birkenstock Bianca NL/Tex Soft Sandal Upper: Textile/Leather; Insole: Leather; Footbed: Natural Cork Footbed features toe grip, deep heel cup and contours for orthopedic support that improves alignment Footbed made of natural cork with a suede liner that adapts to your foot's shape Soft footbed features an added foam layer that cushions feet with excellent shock absorption Classically styled thong strap sandal with padded upper for comfort