REVITALIGN Women's Holly Slipper, Charcoal, 8 High loft sherpa inside and out for year round comfort, warmth and style Scuff slipper with natural cork wrapped footbed Orthotic Grade Footbed approved by American Podiatric Medical Association to help prevent and alleviate Plantar Fasciitis, knee and back pain. Sawtooth rubber outsole for traction on a variety of surfaces Genuine leather welt