our fabrics are soft ultra lightweight Italian fiber fleece, made from 100% recycled plastic bottles. the drop sock has an ergonomic left & right foot with non-slip recycled suede sole. it features suede heel & toe reinforcement for durability & maximum flexibility. also offers smooth chafe-free flatlock seam construction and non-slip sole print for added traction. the best part, they don't scuff the floors and they're machine washable. oh, and we've added our w2w logo in suede at the side & "R" and "L" labels at the back of each sock.