Ergonomic Body-Hugging design for natural curvature of a person’s back, extra high backrest with detachable lumbar cushion, no more back pain or fatigue for long time gaming or working. 360 Degree Swivel, chair back can be locked at any angle between 90-155 degree, height adjustable seat and armrest, adjustable lumbar pillow and head pillow, all for finding your most comfort position. Premium construction with high quality materials, PU leather, and memory foam guarantees you will enjoy our chair for years! The integrated metal frame, explosion-proof gas spring of international standards and heavy duty metal base with smooth-rolling caster wheels provide a sturdy foundation to the chair able to withstand up to 330lbs. PERFECT FOR GAMING&WORKING:Whether working or gaming, this chair will be your best choice.