To provide a coating material composition which excels in the adhesion to a base material and the flexibility and the uniformity of a coated film in coating on the surface of the elastomer or rubber-containing flexible base material.

The coating material composition comprises (a) 100 pts.wt. hydrogenated product of a copolymer of an aromatic vinyl compound and a conjugated diene compound having a content of the aromatic vinyl compound of less than 45 wt.% and (b) 10-60 pts.wt. hydrogenated product of a copolymer of an aromatic vinyl compound and a conjugated diene compound having a content of the aromatic vinyl compound of 45-80 wt.%.