The Norfin Extreme Heated Liner is a game-changer for anglers and outdoor enthusiasts braving frigid conditions. Designed with built-in, battery-operated heating elements and 120g insulation, this liner offers unparalleled warmth in extreme cold. Wear it on its own or layer it under a hard-shell jacket for maximum protection against the elements. Whether you're battling the chill on the ice or enduring frosty winds, this liner ensures you're comfortably warm all day long. Integrated front and back heaters powered by a 2.1 aH or higher power bank for customized warmth Hollofil insulation for exceptional heat retention and lightweight comfort Two zippered side pockets for convenient storage and hand warmth Inner zippered pocket to safely secure valuables Versatile design for solo wear or as an insulating layer under hard-shell jackets Imported Size Chest (in.) Length (in.) Sleeve (in.) S 22.6 28.3 32.2 M 24.2 29.1 32.6 L 25.8 29.9 33.2 XL 27.4 30.7 33.7 2XL 28.9 31.5 34.3 3XL 30.5 32.3 34.8