glerups Wool Slip-On Rubber. Slip away into cozy-land with the glerups Wool Slip-On Rubber shoes. They offer moisture-wicking capabilities to keep odor at bay while keeping your feet warm and dry. Many people use wool to keep warm, but in fact wool can also help keep the body cool. That's because wool absorbs moisture without feeling damp, up to 70% by weight by the way! - This significantly outperforms synthetic fibers or cotton. It is particularly advantageous in the summer when it is hot outside. This way no matter how much you perspire you can stay feeling dry and temperature regulated. Upper, lining, and insole made of textile material. Synthetic outsole.