Zappos.com is proud to offer the Acorn - <em>Sheepskin</em> <em>Bootie</em> (Walnut) - Footwear: Something for your feet to look forward to when you get home. Double-face <em>sheepskin</em> uppers to keep your bare feet warm. Genuine <em>sheepskin</em> lining and collar are biodegradable and hypoallergenic. EVA footbed offers cushioning and support with each step. Memory foam midsole absorbs shock to reduce foot/leg fatigue. Weatherproof TRP outsole provides skid-resistant treat for sure footing.