Northern Comfort Adult "Fair Isle Knit" Black One Size Sherpa-Lined Grip Slipper Socks
"Fair Isle Knit" sherpa-lined, slip-resistant slipper sock.
Other colours are:
River Wear's "Northern Comfort" line of slipper socks are slip-resistant, thanks to the ABS knobs on the soles. ABS is a tougher, temperature resistant synthetic.