BestOffice Ergonomic Armless Office Chair with Adjustable Height, Lumbar Support for Adults(Black)

【ERGONOMIC DESIGN】 - The cushion of BestOffice office chair, accord with human body engineering design, let your body and mesh chair perfect fit, suit long time use, and built-in lumbar support and back support,with the height adjustable seat! Age group: adults and teens. 【EASY ASSEMBLY 】- Our chair comes with all the hardware and necessary tools. With step-by-step instructions, you’ll be set up and ready to game, take on the office in about 15-20 minutes! 【BREATHABLE SEAT】 - The padded mesh seat is thick and resilient. Made from premium quality high density thick sponge and a breathable mesh clothe, preventing body heat and keeping your hips and legs cool and sweat-free. 【SMOOTH & DURABLE CASTERS 】- The PU casters provide great mobility, suitable for hard floors, carpet and more, while being silent during swivelling and moving without scratching your floor surface. 【ADJUSTABLE CHAIR】- The office chairs provide versatility for an optimized position.Adjust height from 35.6" - 40.4".The seat height of this computer mesh chair can be simply adjusted from 18.3" to 23" by a little push-up/press down at the lever under the seat according to your needs. This chair can support a maximum weight of 225 lbs.