Crossford Furniture Co. Ergonomic Synchro-Tilt Office Chair Crossford Furniture Co. Ergonomic Synchro-Tilt Office Chair Ergonomic Synchro-Tilt - full range tilt mechanism that can be locked into place Mesh lined at the back and seat to help circulate air and reduce hot spots Adjustable back height; Multi-directional armrests - up, down, in and out Maximum recommended weight 250lbs.