Designed from 10% cotton and 90% bamboo fiber, the Hahnemuhle Bamboo 290 gsm 24 x 39 Roll 3-inch core is a matte, natural white surface paper roll that is ideal for warm-toned images and monochrome prints. It features a thickness rating of 19.7 mils that offer the paper roll a good weight and feel. The paper roll also comes with a whiteness of 83% and an opacity of 99%. For maximum longevity, this paper roll does not use any optical brightening agent. Moreover, the paper roll is acid-free, water-resistant, buffered with calcium carbonate, and dries up instantly.