Classic two-strap style in a variety of materials with fully adjustable straps * Birko-Flor made of acrylic and polyamide felt fibers, this material is a soft fabric with a smooth leather-like finish * The original Birkenstock footbed featuring pronounced arch support, deep heel cup, and roomy toe box * Footbed molds and shapes to your foot * EVA sole flexible, lightweight, durable and shock absorbing