Features of The North Face Women's ThermoBall Pull-On Boot Upper: Water-resistant, 100% recycled Pet ripstop material Durable water-repellent (DWR) finish to keep feet dry Synthetic mudguard keeps the elements out Lightweight ThermoBall Eco Insulation retains warmth TNF-branded webbing with adjustable buckle closure Oso fleece collar lining for comfort Comfortable OrthoLite Footbed made with 5% recycled rubber content Easy on/off slip-on Sole Unit: Rubber Outsole for increased traction