Made in Canada, land of snow and cold winters, the Nat's ultra-lightweight 12-inch boot has triple-ply nylon uppers with front lacing and top draw cord closure. The thermal efficiency EVA bottom and removable liner with Drylex lamination and Primaloft 200-gram insulation protect feet to -118 F°. Limited stock in a generous men's width that fits 4E feet; see pulldown for available sizes.