Product Description Purdy Contractor 1st paint rollers are designed for good paint pickup and release for fast productivity. This paint applicator tool is made with knitted medium density polyester and is best for semi-smooth to semi-rough surfaces. For best results, use with latex and oil-based paints and primers in flat, eggshell and satin sheens. Handcrafted in the USA, this Purdy roller paint cover is ideal for drywall, ceilings, and concrete. Featuring polypropylene cores that are resistant to all paints, stains and solvents that extend their life. Thermal bond technology winds roller cover fabric to the core with a perfect spiral seam for smooth rolling. Ultra-durable roller cover cores eliminate bending, allowing even contact with the wall. Producing roller covers that result in less spatter, even release or a lint-free finish has been part of Purdy’s dedication to innovation. Purdy has developed exclusive, proprietary manufacturing processes to produce high-quality products for professionals who use them to earn their livelihood. After each nap roller cover is wound, they are double vacuumed to reduce potential fiber shedding and then hand inspected to ensure they meet Purdy’s high-quality standards. From the Manufacturer Purdy Contractor 1st roller covers are made of 100% medium-density material for good production and quick cleanup. Solid paint pick-up and release at an excellent value! Great for rolling many of today's higher viscosity oil-base finishes.