Good condition Product Dimensions 12.7"D x 16.5"W x 13.6"H Size W16.5 x D12.7 x H13.6 inch Item Weight 2.3 Pounds HOW IT WORKS; Working by the leverage effect, the weight of your body naturally pushes your waist for posture correction, It keeps making your body lean forward and sit straight SAY GOODBYE TO BAD SITTING HABITS; Do you often feel tension in your muscles after sitting for a long time? That's because you've probably developed bad sitting habits over time. But with Curble, you can break those habits and start feeling more comfortable - all in just 30 minutes a day for two months! FEATURES; Ergo dual backrest for elastic back and lumbar support, Detachable high-density foam cushion for comfort, Stoppers on the bottom for anti-slip, Large Air holes for ventilation USE EVERYWHERE; Lightweight(2.3 lbs) and easy to use, Put it on an office chair, gaming chair, driving car seat, bed, couch, floor, school chair, desk chair, computer chair, stadium bleacher, etc. DURABLE AND ERGONOMIC; Our chair is built to last! abrasion-resistant material that can withstand up to 800 lbs of pressure without breaking. Plus, the elasticity provides strong and flexible support. RECOMMEND FOR; office workers, students, drivers, teachers, professional gamers, artists, or anyone who is concerned about lumbar or back health and wants to improve posture