The most attractive point of zzzPhoneBed is that we can sleep with 2D character. This is a function necessary for many Japanese!
Furthermore, we can experience powerful alarm, and scroll a screen by running. So, we can live a healthy life regularly by zzzPhoneBed.
KDDI releases 5 kinds of sheets of zzzPhoneBed. As for those material, material is polyester, nylon, pile, cotton.
The English explanation is this.