The Purdy Colossus Sleeve is made from an exclusive formulation of 100% polyamide. It lays paint off very smoothly and carries a remarkable amount of material to the surface without dripping or splattering. This sleeve rolls one-third further than traditional lambskin roller covers and backrolls over 10,000 ft. Other products wear out in less than half the time. Perfect for rolling a great deal of new drywall quickly. Colossus Roller Sleeves hold and release more paint than any other Purdy roller fabric. Designed for heavy-duty painting projects. Also great for stucco, T1-11 siding, brick or rough-textured walls. This Purdy Colossus Sleeve has the following specification Material 100% woven polyamide Size 305mm (12in) Nap Depth 25mm (1in) Core 38mm (1.1/2in)