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 ft². 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 polyamideSize: 457mm (18in)Nap Depth: 19mm (3/4in)Core: 38mm (1.1/2in)