※ Price not negotiable This is the Hitsuji no Iranai Makura Shigoku (Standard Model) pillow. Includes the main pillow and the attached pillowcase (no original box). Size: Width: approx. 54cm Depth: approx. 35cm Height: approx. 8cm-10cm (8cm on the lower side, 10cm on the higher side) Weight: approx. 3.2kg Seller: Hitsuji no Iranai Makura Official Sleep Research Institute - "Fit" like a custom-made pillow - "Pressure distribution structure" to reduce the burden on the head - "Complete ventilation design" to prevent the head from getting stuffy - 10-year durability - Washable - Contains activated carbon - Comes with a special pillowcase (made of Tencel to maximize the softness and breathability of the pillow) Purchased in January 2025 and used for about a year. I used another cover over the pillowcase, so there are no noticeable stains, but please understand that there is some wear and tear.