Zappos.com is proud to offer the Acorn - Bates Mule (Walnut Leather) - Footwear: Treat your feet to something special with the Bates Mule from Acorn®. ; Genuine double-face sheepskin uppers caress your feet in sumptuous softness. ; Sheepskin linings boast hypoallergenic, biodegradable and moisture wicking properties. ; Low-densit...