Fidget Adjustable-Height Seat Is Ideal Seat For Active And Engaged Work And Adjustable To Suit A Wide Variety Of Users. Design Helps Promote Fidgeting Movements That Helps Keep You More Active Throughout The Day. Seat Adjusts From 14 -1/2" To 20" To Alter Seat Height Based On User Comfort. Eva Foam Seat Cushion With Sitz Bone Contour Guides (Patent-Pending) For Optimal Comfort. Anti-Skid Rubber Grip On The Base Keeps Seat In Place During Activity. Lightweight Construction Allows Easy Mobility, Making It Easy To Reconfigure Spaces As Needed Or Carry Between Workspaces. Stool Is Constructed With Abs Plastic And Reinforced Nylon. Sturdy Steel Support Leg Holds Up To 300 Lb. Stool Is Great For Use In Classrooms, Libraries, Computer Labs, Personal Workspaces, Conference Rooms, Touchdown Spaces, Collaboration Areas, Open Floor Plan Offices Or Anywhere Else An Active Seating Solution Is Desired..