The indoor/outdoor Acorn Men's Rambler Mule Slipper combines the best of both worlds in one premium slipper. These scream comfort plus style. The rubber and hand-pressed outsole is there to provide traction control. With tempurature regulating genuine sheep's wool lining, casual styling, and slip-on design, this slipper will be your year-round go anywhere favorite.<br>Over the years, Acorn has designed and innovated to create the comfort classics America has grown to love. Today an expanded product line including Classic Comfort, Studio Comfort, Spa Comfort, and After Active provides customers with a lifestyle collection that fits their needs. Acorn has searched the world to provide footwear for today's lifestyle-- you can count on Acorn to still live by their commitment to provide Comfort on Earth one pair of feet at a time.