This is something that was included when I purchased a Nishikawa pillow a few years ago. I am selling it because I don't use it. Made with soft pipes that can be washed in a washing machine, a pillow material with excellent breathability and quick-drying properties. - Material: Soft pipes - Features: Machine washable - Features: Quick-drying - Features: Good breathability - Features: Stable When shipping, the item will be divided into two bags of pipes because it is thick as is. Thank you for your understanding. Thank you for looking.