Martin Canvas Chestnut With Sherpa Insoles The Martin Mule is Dude’s relaxed slip-on backless mule style. An easy wear staple style, essential for all down time at home or away. Lightweight traction sole and antibacterial memory foam insoles make it perfect for all environments. Style features include a soft, cotton upper, finished with a raw edge, sewn over seam. Includes premium, organic sheepskin insoles. Features: Cotton material Regular Dude fit Ridgelight sole unit Weight 150grms Ultralight outsole Machine washable cold Premium, organic removable sheepskin insole