Combats static electricity by providing a preferred path to the grounded source without the use of wrist straps, shoe straps or drag chains. All ESD seating features contoured high resilient foam seat. Overall height range of 16" to 21" with 5" pneumatic (140mm) lift with chrome plated support tube and piston. The 2"deep backrest has independent paddle lever for 20° tilt from a center pivot point, ergo knob adjustment for 5" height adjustment, built-in lumbar roll and chrome plated backstem. A 5-star 27" polished aluminum base with 2" ESD hard-floor braking caters. Meets guidelines set by the ESD Association. Dissipative upholstery with continuous filament carbon fused fiber in Black. Some assembly required. 15 Year Warranty.