Worn Once Suede - Thick and supple leathers without additional dyes to keep the leather breathable, durable and comfortable Soft footbed - A foam layer is inserted between the cork layer and the suede liner of the original Birkenstock footbed. Millions of microscopic air bubbles cushion your feet while providing moderate arch support EVA - Flexible, lightweight, durable and shock absorbing For Birko-Flor and Birkibuc: Wipe clean with a damp cloth. Try soap and water or a mild leather cleaner to remove stubborn stains.  Allow to dry out of direct sunlight. For Leather: Clean and condition with a mild leather cleaner. Use a matching polish to renew scuff spots and restore the original luster.