From hand-stitched chunky knit to Cloud Cushion memory foam with a weatherproof sole, the Acorn Womens Jam Mule has everything youve ever wanted in a slipper. Acorn button logo adds just the right touch of luxury and uniqueness, balanced by a rugged rubber sole that travels everywhere with you to stand the test of time. The Acorn Jam Mule transitions with you from house to travel to bedroom, with a perfect cloud-like comfort for every aprs adventure.