Designed for ice fishing, the Norfin Explorer Heat Float Bibs are a key component in an incredibly efficient cold-weather system that can keep you comfortable in extreme subzero temperatures (as low as -35F when worn with the Explorer Heat Float Jacket, not included). They're great for boating and snowmobiling too, as they don't restrict your movement and with built-in flotation assistance, they come with an extra measure of safety as well. The lightweight, 100% waterproof and breathable Nortex shell is filled with warm, 180g Hollofil Insulation, and equipped with a built-in battery-operated Heat System that safely generates additional warmth inside the bibs to complement retained body heat; the back and hip heating elements ensure consistent, even coverage at all times. Flexible and functional, the Norfin Explorer Heat Float Bibs for Men boast a wealth of performance features, including a YKK 2-way front zipper with storm flap; leakproof glued seams; long leg zippers with storm flaps; built-in ankle gaiters to prevent snow and cold air entry; reinforced knees and seat with removable inserts; 4 spacious exterior pockets; ahandy zippered chest pocket; and adjustable suspenders for snug, secure comfort. Power requirement: 2.1 aH or higher. 100% waterproof, breathable Nortex shell Built-in closed-cell polyurethane buoyant insulation Battery-operated, evenly zoned Heat System Warm 180g Hollofil Insulation YKK 2-way front zipper with storm flap Leakproof glued seams Built-in ankle gaiters Reinforced knees and seat with removable inserts 4 spacious exterior pockets Zippered chest pocket Adjustable suspenders