Waterproof premium leather is backed with a KEEN.DRY waterproof breathable membrane for total protection from rain and snow. 150g KEEN. Warm insulation and wool felt lining protect you from biting cold. Removable metatomical EVA footbed cushions and supports your feet. Non-marking rubber outsole includes 4mm multi-directional lugs for excellent traction on icy, snowy sidewalks.