Improved for the 2008 season with a sturdier construction and upper. Double-weave 900D nylon upper with reflective piping. Double buckle locking system. Drawcord collar with locking mechanism. 5-layer inner boot liner with Thermaplush. 6mm contoured removable footbed. Proprietary cold resistant EVA midsole for support and cushioning. Cold weather rubber outsole with integrated arch support. Temperature rated for -40 degreesC/-40 degreesF. Measurements: Heel Height: 1 1 2 in Weight: 2 lbs 4 oz Shaft: 11 in Product measurements were taken using size 8, width D - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.