This big and tall office chair supports up to 500 lbs with flip up armrests for easy entry and exit. The wide seat and soft, breathable Pu leather with high density foam provide excellent lumbar support. The adjustable backrest reduces lower back pain, and the waterfall seat edge improves circulation. It offers a flexible rocking angle from 90 to 120 degrees and adjustable seat height. Features include an Sgs certified level 4 gas lift, strong iron base, and premium rubber wheels for smooth quiet movement. Clear instructions and tools included for quick assembly in minutes.