About this item Polyester 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 back support for posture correction, Curved seat for pervis and coccyx lifting, High density 1/2" foam cushion for comfort, Air holes for ventilation USE EVERYWHERE; Light weight(2 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 600 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 VALUABLE GIFT; Health is one of the most important factors in life, Curble Chair helps to make good health habits, It will be a valuable addition to your loved ones, her or him