Only worn a few times The Lug Loafer in Onyx Black Soft, premium upper in black knit with a blend of RWS-certified merino wool and recycled plastic bottles. Cushy insoles in beige for added comfort. Rugged black outsoles with lugs on the bottom for extra grip and durability. Chunky 1.5-in (4-cm) heel for added height. Pull tab at the heel makes it easy to slip on your shoes.