The RAC-A-TAC Rolling Knee Pads with 3" Casters and Chest Support offer optimal mobility and support for various tasks, making them ideal for professionals like auto body repair technicians, painters, and fabricators. With a focus on speed and comfort, these knee pads feature a web spring seat that adjusts from 11.5" to 15.5" high, ensuring a comfortable working position. The chest support enhances stability, allowing you to work in a supported leaning over position. The thick foam inner knee pads provide all-day comfort, and the 3" polyurethane ball bearing casters facilitate smooth movement, especially on rough surfaces. Made in the USA, these knee pads weigh 14 lbs with a load capacity of 300 lbs, making them a reliable choice for demanding jobs.