OAK LEAF Office Chair, Mid Back Mesh Office Computer Swivel Desk Task Chair, Ergonomic Executive Chair with ArmrestsSupportive Backrest The open mesh design creates a breathable, well ventilated backrest, yet with its resilient mesh, the back moulds to your back providing a more supportive seat, which helps align the spine and reduce pressure and muscle fatigue. 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