We put the 509 Range Insulated Bib through the wringer to create a better fitting, better looking, even warmer, and more waterproof pant. Everything from the fully seam-sealed weatherproof 5TECH™ fabric, to the high-grade Thinsulate™ insulation has been examined and refined. Details like removable knee pads, a 5RIDE insulated seat panel, and added stretch zones improve the overall fit and function. Pair it up with the 509 Range Insulated Jacket for total head-to-toe protection.