Diversified Woodcrafts’ Lab Compliant Tech Chair is height adjustable to accommodate desk sitting. Designed to meet the demands of high-use environments like laboratory clean rooms, the seat and back of this Tech Chair are covered in heavy-duty vinyl upholstery. Ergonomic design features include an adjustable, contoured back for improved circulation, high-density foam construction for added comfort and easy fingertip height adjustment. Non-marring glides come standard on these Lab Compliant Tech Chairs, but self-braking casters are an optional add-on should you select that with your purchase.