The Uni-Pro Microfibre Roller Covers are a cost-effective solution for restoring and protecting your roller. These covers are made from a high-quality microfibre, which means they will protect the paint from drying out and cracking on the surface of your roller. They have no fibre shed which means they give an even finish with no spatter. The 10mm nap cover gives a smooth finish to your first coat and can be used with both flat & low sheen acrylic paints.