This stool composed of two materials (sponge and wood) whose hardness are different. The sponge produces comfort and the wood produces stability when sitting. The two materials cut with a semi-circular pattern just touch without any steps and gaps. In other words, they are not bonded.

Although it is a very ordinary stool as structure, it is expected to function as a part of a set by such form, detail, and production accuracy. It is the collective furniture that consists of several pieces as a whole, and also becomes a table, shelf, and partition depending on the arrangement and the presence or absence of sponge.