Microfiber roller covers pick up and release 50 percent more paint than a standard roller cover allowing you to paint faster. Specially constructed for use with today’s low VOC and premium paints. 3/8 inch. Nap is perfect for painting smooth and semi-smooth surfaces. Holds 3 times more paintShed resistantIdeal for low VOC coatingsIdeal for all sheens2-ply polypropylene core3/8" nap9" length