Nishikawa custom-made pillow. It's divided into six sections with zippers, allowing for bead adjustments. This is the "Seiatsu" type shown in the photo. The height adjustment refill beads are the 【Nishikawa】Mini Binchotan Air Cell type. There are 160g of refill beads. The original price was 44,000 yen. Purchased around 2023. Used for about six months, but I haven't adjusted it and it's been in storage, so I'm putting it up for sale. I always used a cover when using it, so there are no stains or odors. I look forward to hearing from those who understand. Thank you very much.