I have kept this item in its original packaging, brand new and unused. The contents are completely unused. Purchased in June 2025 from the MTG online shop. Retail price: 16,500 yen. I bought two, but I didn't use this one for side sleeping, so I'm selling it in pristine condition. The box is quite large, so shipping costs will be high. I will ship it in the original box, wrapped in plastic. Cardboard reinforcement around the box is available for an additional 500 yen. I may consider using it if it doesn't sell, so I'm sorry, but I can't offer a discount.