The rolling casters allow you to move easily and smoothly on the office floor. Suitable for any floor without damage.Ergonomic Office Home Chair with Fixed Armrest, Soft Foam Seat Cushion and Lumbar Support Mesh High Back Desk ChairProduct name: office chairWhether it can be lifted and lowered: yesIs it rotatable: yesIs it possible to lie down: noErgonomic support: yesquickly:1. Please check the size and color before purchasing.2. Please note that there may be slight color difference due to different monitors, 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 office chairs.