About this item Ergonomic Office Chair (Full-Body Support): Designed for users 5'2' to 6', this computer desk chair delivers 4-point support (head/back/hips/hands). Features height adjustment, 4-way lumbar support, 2D headrest, breathable mesh, flip-up armrests, and smooth rocking function for all-day posture perfection. 3-Year Core Support Warranty: 3 Year Free Return &Exchange for Quality lssuesIf it's a quality issue, we'll replace it or refund you. Free. lt's that simple. 4-way Lumbar and 2D Headrest (Computer Chair Comfort): Conquer back pain! Ergonomic office chair with high-density mesh actively relieves pressure. Precisely adjust lumbar support (up/down/forward/back) and headrest (vertical) for personalized spine alignment in your computer chair. Space-Saving Flip-Up Armrests (Maximize Workspace): Flip armrests 90° upward to stow completely under desks! This mesh office chair transforms into compact mode, freeing 35% more floor space around your computer station.