HI-GRADE--We formulated this high capacity knitted polyester fabric in order to provide great performance at a superb value. HI-GRADE covers provide excellent pickup and release yielding fast and even coverage for both the Contractor and D.I.Y.'er alike Medium Density knitted polyester fabric Resists matting Excellent performance and value For all flat, eggshell, and satin paints Heavy Duty plastic core Also available on solvent resistant phenolic core