ROSE® Sigma Mesh Mid Back Office ChairSigma Mesh Mid Back Office Chair. Ergonomic design, breathable mesh fabric, and adjustable features for comfort in any workspace. (Meta description) Rose Sigma Mid Back Mesh Chair (Red) transform the way you work at office home with ergonomic work chairs. Your furniture should move with you, not hold you back. This is a highly adjustable work chair well suited for the demands of your workday. The layered mesh back and Fabric cushioned seat offer