Thickened Cushion: Made of high-density compressed foam, this round rolling stool features a cushion size of 15.7 x 3.9 in, with a 20% increase in thickness for enhanced comfort. The leather seat surface is breathable, durable, easy to clean, and resistant to deformation or fading, even with long-term use. 450 lbs Weight Capacity: The round stool base is widened to 21.3 in / 54.9 cm, with a sturdy metal structure that supports up to 450 lbs. Rest assured, we use an SGS-certified three-stage hydraulic gas lift, so you dont need to worry about metal bending, ensuring durability and security. Adjustable Height Range: This office seat height is adjustable from 21.7 to 28.0 in / 55 to 71 cm, easily accommodating different height variations and work requirements. This allows you to find a comfortable and efficient working posture in various situations