BackJoy Posture Plus ・Black Regular Size (Weight 60-135kg) ・Light Blue Mini Size (Weight 30-60kg) The black regular size has been used several times, but there are not many noticeable scratches or stains, and I think it is in relatively clean condition. The light blue mini size is unused. Please understand that there may be some minor dirt, etc., from the storage period. Both have been lightly cleaned with disinfectant wipes. We will ship using recycled cardboard. Product Description Designed to relieve back pain and maintain proper posture. Made of special EVA material, it is waterproof and can be used both indoors and outdoors. It can be used on any seat, such as office chairs and car seats.