The Arctic Adventure winter boots by the original Muck boot company are developed specifically for women to provide an ultimate fit and to tackle all kind of weather challenges. These tall all-purpose boots deliver amazing comfort, traction and warmth required to carry through the cold season. Rubber and 5mm CR flex-foam upper. Rounded topline for a more comfortable fit around the calf. Soft fleece lining for heat retention. Removable, textile lined contoured footbed for cushioning. EVA moulded midsole for cushioning and support. Durable and shock-resistant rubber sole with aggressive treading. Comfort range is -20°F to 50°F.