Learn about the unique features of National Public Seating stools, including a 4-point weld system and eight riveted points on the hardboard seat to prevent warping. NPS stools will provide you with years of worry-free use. Available in various heights, with a vinyl or hardboard seat, adjustable or non-adjustable legs, with or without a backrest, NPS is the answer to all your stool needs. Be sure to check out NPS Science Tables as well.