Key Features Shed-resistant and high-density HydroFlow technology provides controlled release, prevents sagging Exclusive lager colored fabric for fastest coverage, non-matting for longer life Green double-thick polypropylene core resists water, solvents and cracking Wooster Super Fab FTP 9 Inch 3/4 Nap Professional Roller Cover. Hydro Flow Technology Provides Controlled Release, Prevents Sagging. Proprietary golden yellow fabric provides exceptional capacity with all flat or satin paints, stains and waterproofing. Fabric resists matting for complete coverage with smoother results. Green double-thick polypropylene core resists water, solvent, and cracking. Includes end caps. Shed-resistant and high-capacity for flat, eggshell and satin paints. HydroFlow technology provides controlled release, prevents sagging. Green double-thick polypropylene core resists water, solvents and cracking. Shed-resistant and high-capacity for flat, eggshell and satin paints. HydroFlow technology provides controlled release, prevents sagging. Green double-thick polypropylene core resists water, solvents, and cracking.