Boss Office Products Sit-Stand Desk Chair with Adjustable Arms, Black

Contoured back and seat help to relieve back-strain Large 27" nylon base for greater stability 20" diameter chrome foot ring Pneumatic gas lift seat height adjustment Hooded double wheel casters Adjustable arms MAS Certified Green Overall dimensions: 25.5"W x 25"D x 42-47.5"H Weight Capacity: 275 lbs.