With an ergonomic design and self-rescue features, I3 Bibs are built to protect you from weather while you are out ice fishing. A waterproof/windproof nylon shell and Thinsulate™ insulation keep the heat in and the cold out. Moreover, internal knee and seat padding provides addition protection. Frabill® I3 Bibs are equipped with both cargo and hand warmer pockets, giving you shelter for your hands and storage for your gear.