Rethink The Way You Go About Tackling The Day With The Advance Drafting Stool In Mesh. Designed With 90 Degree Vertically Rotating Armrests, Advance Was So Named After The Stirrings Of Enthusiasm It Helps Activate. Complete With A Mesh Back That Combines Both Form-Fitting Ergonomics And The Progressive Nature Of Achievement, Advance Keeps Productivity High While Lowering Both Mental And Physical Stress. Made With A Durable Nylon Frame And Full 360 Degree Swivel, This Drafting Stool Installment Of The Advance Series Also Features An Extra Tall Gas Cylinder, And Sturdy Chrome Plated Steel Footring To Enhance Posture. Complete With One-Lever Height Adjustment, And Five Dual-Wheel Casters For Easy Gliding Over Carpeted Surfaces, Advance Is A Formative Drafting Stool For Either Home Or Office. Set Includes: One - Advance Drafting Stool Overall Product Dimensions: 27.5"L X 27.5"W X 41 - 48.5"H Seat Dimensions: 16.5"L X 19"W X 23 - 30.5"H Cushion Thickness: 3.5"H Armrest Height: 29.5 - 37"H Backrest Dimensions: 18"H Material: Assembly Required,weight capacity 331,Redius 350mm Nylon five star base,Wood plate with 30kg/m3 density foam,100% polyester mesh,100% polyester mesh,PP Frame,rotatalbe PP armrest,chrome plating steel outer ring with powder coated steel frame, gas spring