Frames are described as steel or metal. Upholstery materials listed include polyester, 100% polyurethane, and vinyl. One listing specifies polyurethane foam as the seat fill.
Listed item weights include about 12 pounds and 20 pounds across different models. Maximum load is listed as 250 pounds.
The stools use a balance/wobble design that encourages movement—allowing you to tip, twist, and rock. This rolling-balance motion is described as promoting active sitting and engaging the core.
Some models are described as rolling-balance stools and list casters or wheels. Listings also highlight a lightweight design and note the stool can “roll into place.”
Most listings note adult assembly is required but no tools are needed. Care instructions list spot-cleaning or wiping the upholstery.
Standing-desk-style models list heights from about 23 to 33 inches, which lets you perch near standing-desk height. (Other models list lower ranges.)
Only one listing specifies a 3-inch seat cushion. Other listings note polyurethane foam as the seat fill but do not clearly state cushion thickness for most models.
Care instructions across listings recommend spot cleaning or wiping the upholstery. One listing specifically notes the triangular saddle seat is easy to wipe clean.