The Fission SV mitten combines the proven performance of the Fortius™ 1.0 with a waterproof and breathable GORE-TEX lining, providing complete weather protection. PrimaLoft® Silver and Gold insulation provide maximum warmth, while the additional Octa® Loft lining provides breathability and next-to-skin comfort. Together, these fabrics provide improved moisture management and greater ease of donning and doffing. For added strength, two layers of premium goatskin leather reinforcements maximize durability. Elastic cuff bands adjust to fit snugly around the wrist, and drawcords for opening and tightening the cuffs protect against water in severe weather.