LATEX/OIL. Proprietary golden yellow fabric provides exceptional capacity with all flat or satin paints, stains, waterproofing. Resists matting for complete coverage, smoother results. Green™ double-thick polypropylene core resists water, solvents, and cracking (4” length has a clear, single-ply polypropylene core). Nap 3/4”, Semi-Rough.