Introducing new Slip-on Rubber Sole in Sand, one of three new colours to celebrate glerups 30th anniversary. Nanny Glerups started crafting the family’s slippers back in 1993, inspired by soft, durable, no-itch wool. Glerups has kicked bedroom slippers out of the bedroom and into, well, everywhere. Get more warmth and the comfort from 100% pure wool, with the unisex slipper from Glerups. No-itch wool. No-slip rubber. No-substitute Glerups.