DESIGN: Acrylic and polyamide Birko-Flor upper lends a leather-like finish and is tear resistant Felt lined straps with adjustable buckles for ultimate comfort and fit Birkenstock® footbed offers arch support, a deep heel cup, and a roomy toe box Flexible, lightweight, durable and shock absorbing EVA outsole ADDITIONAL DETAILS: Care instructions: Wipe clean with mild soap and water.