DEVISE FACTORY uses two types of fabric, 'cotton' and 'rayon/cotton blend'. 

Cotton Fabrics

100% cotton, with a warm, hand-knitted, sweater-like feel with a 1950's US vintage look and feel.
Rare vintage US knitting machines are used to reproduce the vintage texture and detail from the experience of vintage clothing buyers.
In addition, after repeated meetings with the factory, we have combined the modern quality of the original.

In particular, fabrics with "grandfille yarn" are even softer and offer superb comfort.

Rayon x Cotton Fabric

Unique blend of 34% rayon/66% cotton. The shiny, supple texture feels like a high-end knit. This series uses old-style suspension knitting machines made in Japan to achieve a more beautiful casual look.