Helly Hansen Arctic Patrol Boot 2027 The Helly Hansen Arctic Patrol Boot 2027 is built for serious winter conditions with heavy insulation and rugged weather protection. A waterproof rubber shell and sealed-seam construction combine with 400g PrimaLoftA(R) Eco insulation to help keep feet warm and dry in extreme cold. A removable felt sockliner, faux shearling lining, and aluminum shield underfoot add another layer of cold-weather comfort. HH MaxGrip and HH Surround-Grip provide dependable traction when moving across snowy and icy surfaces. Details Upper: Polyurethane, polyester, and leather with a waterproof rubber shell Waterproofing: Sealed-seam construction with waterproof vamp construction Insulation: 400g PrimaLoftA(R) Eco synthetic insulation Temperature Rating: -22AdegF to -40AdegF Lining: Recycled felt vamp lining with anti-odor treatment and faux shearling shaft lining Cold Protection: Aluminum shield underfoot helps block cold Insole: Removable felt sockliner with Max-Comfort footbed Midsole: EVA midsole Outsole: Vulcanized rubber sole with HH MaxGrip and HH Surround-Grip technology Closure: Lace closure with collar drawcord Weight: 3 lb 9.14 oz Warranty: Limited lifetime manufacturer warranty