Polyester Waterproof 2-layer Toray fabric keeps you dry with fully taped seams. PrimaLoft Rise provides the most warmth and is lined with moisture-wicking polyester taffeta. Strategically placed abrasion panels on the back seat, knees and bottom cuffs enhance durability, providing endless hours of performance in cold, wet conditions. Adjustable suspender straps cushioned with an air mesh harness for comfort and a high-back panel for insulated waterproof coverage. The center front YKK Vislon zipper is protected by a waterproof storm flap to keep the driving rain out. Drop-in chest high hand-warmer pockets lined with brushed tricot for warmth and vertical zippered left chest pocket with YKK Aquaguard zipper. Lightweight, durable, waterproof and ultra-warm, the Simms Challenger Insulated Bib silences cold, stormy weather so you can stand tall through it all.