Built with the same steamship-tough protection that handles Alaska pipelines and Saskatchewan snow routes, the Whaleback Waterproof Insulated Long Coat wraps you in 3M™ Thinsulate™ insulation and 100% waterproof nylon that’s nearly 4x more abrasion resistant than classic cotton duck work fabric. With an interior waist cinch, snapped side vents and 2-way zipper, it moves with you while keeping the elements locked out from head to knee.