The insulated protection of the Oboz Big Sky Low Insulated BDry will keep you warm and ready to go on any outdoor adventure! ; Oiled top grain leather upper. ; B-Dry&#8482; waterproof breathable membrane allows vapor to escape your foot, but is impervious to water coming in. ; 100 gram 3M&#8482; Thinsulate insulation for added warmth and protection against the cold. ; Slip-on style with elastic gore side panels for a flexible yet secure fit. ; Molded rubber toe cap and heel counter. ; Breathable textile lining wicks away moisture. ; O Fit Insole&#8482; Thermal has an Mylare base layer to reduce heat loss, a felt wool top layer, low-density EVA pods, sculpted EVA arch support to keep the foot in neutral position, and a high-density EVA heel cup for natural support and cushioning. ; Dual density EVA midsole for stability and cushioning. ; Nylon shank for lateral and torsional flex control. ; Lightweight TPU chassis provides long term support, motion control, heel lock, stability and prevents stone bruising without inhibiting flex. ; Granite Peak outsole with winterized rubber and a pronounced lug pattern that reliably grips in cold climate conditions. ; Imported. Measurements: ; Weight: 1 lb 4 oz ; Product measurements were taken using size 12, width D - Medium. Please note that measurements may vary by size.