Birkenstock Unisex Boston Leather Clog,Hunter Brown Leather,42 EU/11 N US 100% Leather Imported Synthetic sole Uppers are made of thick leather that's minimally processed; they're durable, breathable, and comfortable Suede footbed liner naturally wicks away moisture EVA outsole is lightweight, flexible, shock-absorbing, and repairable This style features the original Birkenstock Footbed; a cork and jute support system that molds to each individual's footprint