The smooth matte surface of the Hahnemuhle Photo Rag 308 Paper makes it a popular choice for photographers looking to produce their own fine art prints. Made from 100% cotton rag, this media features a high-quality heft and feel, which is supported by the basis weight of 308 gsm and thickness of 18.9 mil. Also, it has a rated opacity of 99% along with a whiteness of 92.5%, which is achieved through the use of minimal optical brightening agents. For ensuring archival quality, the paper is acid free and calcium carbonate buffered. Additionally, it is instant drying and water resistant and comes on a 3" core.