Ergonomic Backrest: The curved backrest of this mesh desk chair flawlessly contours to your body, and the lumbar support system mimics a pair of hands, pushing up and supporting your back. Choose this office chair, choose comfort Solid Chair Construction: This mid-back office chair is constructed of hard-wearing polyester mesh, durable star base, solid rolling casters and SGS-certified gas cylinder. It has passed BIFMA X5.1 Test and is recommended for office use for customers under 136 kg Flip-Up Armrests For Flexible Use: Lift the armrests to slide the chair neatly under your desk, or lower them for cozy arm support during long work sessions. Adjustable arms make this swivel study chair ideal for compact or multipurpose workspaces Upgraded Seat for Better Sitting Comfort: Featuring a 51 cm W, 51 cm D, and 10 cm-thick cushion, this swivel mesh chair offers a broader seating area that enhances comfort. The upgraded seat maintains ease throughout typing, reading, or studying Stable Star Base & Smooth 360° Wheels: Designed for effortless movement, this ergonomic chair features a sturdy star base and five 360° swivel wheels, allowing you to glide smoothly across your workspace and keep up with a fast-paced workday