Thank you for viewing. This navy cushion supports the pelvis and helps improve posture. Purchased from an authorized retailer on April 10, Reiwa 7 (2025), I tried it out once but it didn't suit me, so I'm selling it. It's almost new since I've only sat on it once. [Product Name] Style SMART [Color] Navy [Model Number] YS-AK20A [Size] Approximately W450mm x D370mm x H380mm [Weight] Approximately 2.6kg [Weight Capacity] 120kg There is a tear in the corner of the outer box due to shipping (photo 5). Please refrain from purchasing if you are concerned about minor details or are overly sensitive. To prevent product substitution, returns are not accepted, so please understand. For packaging, to prevent water damage, the outer box will be wrapped in a plastic bag and shipped via Mercari delivery. Delivery to Okinawa Prefecture and remote islands is not available.