Technical specifications of ME92 OFO management chair  Specifications  Back size  50 × 70  Insole size  51 × 46  brand  Offo  Height adjustment     Adjust the back movement     Fabric material  foam  Batch material  Metal with leather upholstery  Foam material  Normal  Minimum height  112  Maximum height  121  Space  70 × 70  Type of five feathers  plastic  Jack type  9