We Are Proud Of Our Backrest Stool ? The Most Versatile Utility Seat Available! our New Mt Backrest Stool Is Engineered For Stability And Comfort. Perfect For Spas, Schools, Tattoo Shops, Clinics, Massage Therapists, And More. Featuring An Extra Large 15 Inch Diameter Seat Pad That Is Height Adjustable With A Generous 4 Inch Semi-firm Foam System And A Removable Backrest. To Ensure Durability The Mt Backrest Stool Has Our Environmental Skin Touch Pu That Is Oil, Water, And Abrasion Resistant And You Can Rest Assured All Of Our Materials Are Vigorously Tested For Formaldehyde, Elasticity, Salt Spray, Steel Hardness, Flammability, Working Weight, Density, And More. Available In Various Colors This Stool Promises Great Comfort And Longevity. each Element Of The Stool Has Been Engineered For Comfort, Stability And Longevity! perfect For Professional And At Home Use! three (3)-years Warranty specifications: seat Diameter: 15” (fully Rotating) height: 17” – 23” (adjustable) weight: 14.5 Lb. support Weight: 550 Lb. foam: 4” Exclusive Multi-layer Small Cell? Foam (higher Density Than Normal Foam)