Wider Curble Chair, portable posture support device combines the principles of leverage and its flexible material, to naturally correct your posture. Take the Curble Chair with you to work, school, or your car to prevent cervical kyphosis, disc herniation, and scoliosis, which tend to occur for people who sit for long periods of time Based on ergonomic design, the support cushion, made of a highly elastic material, pulls in the pelvis and exerts pressure on to the waist. The durable, yet elastic backrest can withstand a load of up to 310lbs/140kg and effectively supports your spine, as it naturally maintains the correct posture, reducing back pain and fatigue Two-way use: Place the Curble Chair against or with some space between the backrest of your chair. This allows you to adjust the Curble Chair to the utmost level of comfort and posture correction for the user The double layered, water resistant fabric provides comfort and maintains sanitation. It is very hygienic and feels soft. The double layered cushion sticks firmly to the waistThe built-in “air hole way” ventilation system and formed EVA (ethylene-vinyl acetate) foam will evenly distribute the body’s weight. This helps with circulating air to distribute body heat smoothly and to prevent sweat from building up even after long hours of sitting. Convenient, portable, and easy-to-use: ideal for carrying with built-in handle, and is easy to install. Use it anywhere you need, such as in the office, at school, in the car, on your bed, sofa, the floor or even outdoors