Made with a durable, 500D nylon shell, these 6471 Thermal Overalls are a warm, water-repellent piece of clothing that protects you from the harshest winters. Nylon shell repels wind, rain and cold. 3M Thinsulate traps heat, creating a lasting, warm interior. Heavy-duty, 1600D nylon reinforcements add an extra layer of support in heavy wear areas to prolong longevity of these bibs. Removable, knee and shin pads provide an extra level of security and prevent injury. Elastic straps and four-way stretch sides supply a comfortable, custom fit conforms to your body. Full-length, YKK zippers on each leg allow quick on/off movements without removing work boots. Snap closures throughout the legs prevent rain and water exposure. Stow items in zippered pockets for convenient access and storage. 3M reflective accents enhance visibility in low-light conditions. These overalls are ideal for the toughest work from construction to mining. Machine-wash this clothing to wear the next day.