The UNi-PRO You Can Do It Microfibre Roller Cover features a unique open-fibre structure that absorbs and holds more paint yet releases it evenly to give you an ultra-smooth finish. The high-absorption 10mm nap fibre rolls further, with less spatter and has no fibre shed, for an unsurpassed first coat coverage. Perfect for use on walls, ceilings, and smooth surfaces. Suitable for use with flat, low sheen acrylic and enamel paints. Handy Tips: If you are painting overnight, make sure you wrap up your paint roller covers in cling wrap, so they don’t dry out. They can then be reused the next day to finish off your painting task. When painting a room always start on the ceiling and then work your way down from there. Ceiling, walls, trims and finally doors.