The Standard Series includes some of our most popular models. Comfortable, with an ultra-stable design, these stools are the perfect choice for a wide variety of applications. Overview • One-piece, American-made, Black, nylon base• Full size diameter top and base for comfort and stability• 5-leg design for greater stability• Firm polyfoam padding• 4″ thick seat for extra comfort• 2.5″ dual wheel casters• Single lever, pneumatic height adjustment• All seats have 3/4″ thick solid plywood base• Premium, stain-resistant, woven, knit-backed,vinyl upholstery• Knock-down design saves on shipping• Easy, no tools required assembly• Customizable with options including a backrest– see options• 250 lbs. load capacity under normal use