Welcome to a new era in functional comfort. The Edge Drafting Stool implements cutting edge ergonomics to deliver a comprehensive seating experience. Edge features a breathable mesh back for lower back lumbar support, padded waterfall vinyl seat to ease pain and pressure around your thighs, flip-up padded arms, an extra tall gas cylinder with a footring, and it securely locks in place with a user-friendly seat tilt plus tension control knob. Edge is a progressively minded drafting stool perfect for school, work, or home use. Features: 90 Degree Flip-Up Padded Arms, Tall Drafting Chair, Vinyl Covered Foam Seat, Standing Desk Chair, Tall Pneumatic Gas Cylinder, Seat Tilt Tension Control, Assembly Required Overall Product Dimensions: 27.5"L x 27.5"W x 41.5 - 49"H, Seat Dimensions: 18"L x 19.5"W x 22 - 29.5"H, Armrest Height: 32 - 39.5"H, Backrest Dimensions: 19.5"H, Armrest Dimension: 11"L x 3"W x 2.5"H, Base Dimension: 27.5"L x 27.5"W . Set Includes: One - Edge Office Drafting Chair with Foot Ring Mesh Back and Black Leatherette Seat