We've taken the new and improved perforated and shed-resistant HomeRight Premium Roller Cover to a an even better level of quality. The roller cover nap is made of durable, lasting polyester, and the rugged roller cover core is made of long-wearing polypropylene. The roller cover can be used on both smooth and semi-smooth surfaces, such as drywall and plaster. Use the HomeRight 9" Premium Roller Cover with PaintStick EZ-Twist, PaintStick, power rollers and other pressure-fed paint applicators. The 3/8" nap is best for smooth surfaces and materials like latex-based and oil-based paints and primers. Roller Cleaning kit available under item C800369.