The MODEL B black open back slippers from GLERUPS is a bedroom slippers that's out of the bedroom and into, well, just about everywhere! 100% natural and breathable Glerups fine wool makes feet feel dry and warm. All-season comfort. No-itch wool. Slip-resistant leather outsole. Packable, giftable, loveable. The Glerups slipper is natural comfort since 1993.