Viastone Premium Single-Sided Photo Paper Premium Photo Paper Made entirely of natural stone composition. No trees or other wood by-products have been added. In addition, no chlorine bleach has been used; the stone content is naturally bright white. This innovative papermaking process does not require water or toxic agents and does not contribute to the practice of deforestation or water pollution. The result is a tree-free and chlorine-free paper that is superior in performance, appearance and aesthetics. Waterproof Premium Single-Sided Matte Photo Paper 9.6 mil. 11 x 17 20 Sheets per Pack