Made from 90% bamboo fiber and 10% cotton, Hahnemuhle's Bamboo Fine Art Paper, available here as a 25-pack of 13 x 19" sheets, offers a matte natural white surface well suited for warm-toned images and monochrome prints. It delivers a basis weight of 290 gsm along with a thickness of 19.7 mil for a good weight and feel. Also, it has a rated opacity of 99%, a whiteness of 83%, and does not use any optical brightening agents for maximum longevity. Additionally, it is acid free, calcium carbonate buffered, instant drying, and has a high water resistance.