It is made of paper, but it is much stronger than normal paper. The material is called “Naolon” developed by a small company in Yamanashi, Japan. The wrinkled surface gives a unique impression. Naoto Fukasawa, who was born in Yamanashi, found this material and decided to start a new brand called “Siwa” by taking advantage of the material.
Via: Excite/Ism
