Product name: Office chairBackrest height: 67cmWhether it can be raised and lowered: NoWhether it can be rotated: NoWhether to lie down: NoWhether to support ergonomics: YesHandrail type: fixed handrailprompt:1. Please check the size and color before buying.2. Please note that due to different monitors, slight color differences may occur, please forgive me.3. The above data reference, manual measurement may be wrong, please refer to the actual product, thank you.4. This product does not include items other than the office chair.5. If you find any problems with our products, please feel free to contact us via email and we will resolve this issue as soon as possible.6. Your sharing and feedback are welcome so that we can provide you with better products and services.7.Thank you for visiting my shop, click to enter my shop, there will be many products for your reference, logistics, usually we will transfer 1-3, the estimated delivery time is 9-15 daysMeet your various needs in different sitting positions, whether you are working, studying or resting.If you have any questions, please email us to let us know