"Hitsuji no Iranai Makura" (Pillow That Doesn't Need Sheep) - Tuning Purchased on Amazon in October 2025. I tried it a few times, but it didn't suit me, so I haven't used it much. There are no noticeable damages or stains, but please understand that this is a used item. [Product Description] The pillow body is made of very soft TPE material, with the top and bottom being 4cm and 4.5cm respectively. The height can be adjusted by inserting crystal fiber sheets (1cm, 2cm, 3cm) underneath. Officially, it boasts durability that anticipates 10 years of tossing and turning. The main body and sheets can be washed with water. A Tencel cover is also included. Returns are not accepted to prevent product substitution.