VERSATILE: OmniTrax Interchangeable Sole System for traction on the fly; easily change soles as conditions or terrains demand. WATERPROOF: Waterproof breathable bootie construction combined with waterproof leather keeps feet bone dry. INSULATION: Fleece lining adds comfort and warmth. ON/OFF: Stretch goring provides easy & convient on & off COMFORT: Shock-absorbing EVA midsole offers underfoot comfort and support. SLIP-ON THE ALPINE CHELSEA AND TAKE ON WINTER IN FLEECE-LINED, WATERPROOF COMFORT.