Saddle Seat Lab Stool, Backless, Supports Up to 250 lb, 21.25"-26.25" High Black Seat, Black Base, Ships in 1-3 Business DaysSaddle seat helps keep hips engaged, encourages better posture and may allow better breathing from the diaphragm.Five-star nylon base for stability.Easy-to-clean vinyl for easy maintenance. WARNING: This product can expose you to Lead, which is known to the State of California to cause Cancer and Birth Defect/Reproductive Harm. For more information go to www.P65Warnings.ca.gov. - Cancer:Lead;;Birth Defect/Reproductive Harm:Lead