Birkenstock Women's Mayari Graceful Sangria Birko-Flor Sandal 37 (US Women's 6-6.5) Birko Flor An elegant cross-strap, toe loop sandal with an adjustable strap in a variety of materials Birko Flor - Made of acrylic and polyamide felt fibers, this material is a soft fabric with a smooth leather-like finish Footbed: The original Birkenstock footbed - Featuring pronounced arch support, deep heel cup, and roomy toe box Footbed molds and shapes to your foot Sole material: EVA - Flexible, lightweight, durable and shock absorbing