Purchased in September 2024 along with a mattress for my father, who snores heavily. He used it for about 3 days, but it didn't suit him, so he stopped using it. A pillow cover was used during use. It has been air-dried, but please understand that this is a used, second-hand item. Purchase price: 33,000 JPY (tax included) - Included: Storage bag, warranty, unused pillow cover An additional organic cotton pillow cover (navy) that came with a campaign is also included, but it has my father's initial "S" on it to avoid confusion within the family. Please check the photos. It will be shipped in bubble wrap with simple packaging. The following is quoted from the Brain Sleep official website: Reduces snoring The crown wave shape promotes sleeping on your side and regulates breathing. The gentle crown wave consistently maintains side sleeping. It secures the airway during sleep, allowing for smooth breathing and reducing snoring.