For outstanding contrast, bright colors, and sharp details, Sihl MASTERCLASS High Gloss Photo Paper 330 provides a classic glossy surface that will make the most of your images. This heavy 330 gsm paper is available here as a 44" x 98' roll and features a thickness of 10.8 mil and an opacity of 98%. It also has a microporous coating that is quick drying and water-resistant. And, it comes on a 3" core.