Please check the photos as there may be threads and scratches from use. Please understand that this is a used item, and consider and purchase it with no claims and no returns. The belt has some looseness, and the screws are slightly rusty, but there is no problem with use. ■ Compatible chairs: Backrests with a width of 400mm to 550mm Features ● The lumbar support, which moves three-dimensionally with four springs, fits perfectly to your back. ● It moves flexibly, so it firmly supports your back in any sitting posture. ● The lumbar support can be adjusted in 5 stages, up and down within a range of 7cm, allowing you to adjust it to your preferred height. ● It can be easily installed by simply securing it with an adjustable rubber belt. ● You can upgrade the comfort from office chairs to living room chairs and car seats. ● The cool mesh fabric is breathable, so it is comfortable even when used for long periods of time. ● The mesh fabric cover can be removed and washed, keeping it clean at all times. 10