Acorn FOREST MULE Slippers for Women Classic styling and forest friends! Unique and custom Acorn embroidery on warm boiled wool uppers Fully lined in cozy berber Featuring a lofty Acorn memory foam midsole over a comfort cushion layer of featherweight EVA In addition, the enhanced, raised heel and arch add extra stability and support Non-slip, weatherproof soles make them perfect for indoor/outdoor wear