The Nat’s R917, a 30 cm (12 in.) muk-luk inspired winter boot, features a 100% waterproof EVA shell with high thermal efficiency and a removable liner insulated with 200 g Primaloft®, delivering an ultra-light, very warm, and breathable boot that dries quickly and performs in harsh winter conditions. Ideal for outdoor chores, snow blowing, light winter work, and even as a snowmobile boot, it provides reliable protection down to -60 °C (-76 °F), making it a solid choice for anyone who needs dependable warmth and comfort during long hours outside in extreme cold.