Ninecer Ergonomic Mesh Office Chair with 3D Adjustable Armrests, Mid Back Swivel Desk Chair with Lumbar Support, Height Adjustable Rolling Computer Chair 250lbs, for Home Office,Grey

3D Adjustable Armrests：Rotate 30° or slide 2.6" to relieve elbow and hand pressure. Ergonomic Mesh Back： Breathable mid-back mesh offers airflow and supports posture. Height Adjustable Seat：Seat height ranges from 17.9" to 22.2" with smooth pneumatic lift. Durable and Stable Base：Equipped with a strong base and smooth-rolling casters for 360° movement. Multiple Color Options：Available in grey, black, white, and pink to match your space style. Product Specifications Weight Capacity:250 lbs Overall Dimensions:26"(W) x 24.8"-26"(D) x 40.1"-44.4"(H) Seat Dimensions:19.7"(W) x 19.7"(D) Seat Height:17.9"–22.2" Armrest Size:10.2"(L), Adjustable 30° & 2.6" forward/back Backrest Height:22.2" Base Diameter:26" Material:Mesh back, padded seat cushion Assembly:Required Package Includes: 1 x A brand new grey bar stools 1 x A clear installation instruction 1 x A complete installation tool package