This rolling armless office chair features a high-density foam cushion for comfort and durability, covered with breathable mesh fabric to prevent stuffiness and sweat. Its compact low-back design offers 360° rotation for flexibility, and the height-adjustable feature (16.54"-21.25") fits various desk heights and small spaces like bedrooms and study rooms. The chair supports up to 250 lbs, has "Y" shaped lumbar support, and is BIFMA certified with SGS-certified cylinders, ensuring safety and reliability. Equipped with smooth casters, it glides quietly on floors without causing damage. 【Fast and Simple Installation】The office chair includes screws, tools, and an installation manual. With only 5 parts, and only takes 4 steps to complete the installation in 10-15 minutes. We aim to offer our customers 100% contentment assurance for our office desk chair. Please don't hesitate to contact our customer service support if you have any questions about the purchase. 【Y-shaped Backrest Ergonomics】The armless office chair with a Y-shaped mesh backrest fits the curve of your lower back, and reduces unnecessary pressure on the spine, avoiding back pain. The upgraded Y-shaped armless desk chair provides you with enough support, making users feel more comfortable when working for a long time. 【Detachable and Adjustable Office Chair】The new upgraded armless office chair optimizes the pneumatic lifting device, which makes the height adjustment more stable and the backrest less wobbly. You can raise and lower the seat height as needed, the adjustment range is 15.94“-20.67”. The seat cushion of the small desk chair is removable and easy to clean. The chair swivels an easy 360 degrees to maximize your workspace without straining you and remains stable when you need to work. 【Sturdy Desk Chair with Wheels】 Small desk chair with thick foam cushion, durable chair base, sturdy gas lift, and PU silent casters; suitable for hard floors, carpets, and other floorings. All components of this chair are of good quality and come from reliable suppliers. The BIFMA Certified sturdy base is tested over 10000 times to ensure your safety when you sit on our armless desk chair. Such small desk chairs are perfect for small spaces, space-saving yet sturdy! 【Comfortable Armless Office Chair】 No armrests, no limits, flexible and space-saving, the chair is suitable for kids and teens and is also friendly to adults. This low-back small office chair with a foam molded seat can also be a task chair. Besides, this armless office chair has a mesh back for the most comfort. The advanced armless office chair with an ergonomic design will bring you a first-class sitting experience.