Flexicore Packaging® 15 x 20 Black Tissue Paper 100ct. All of our paper products are manufactured with the highest grade materials and always remain acid free. Flexicore Packaging produces all of its colored tissue paper with non-bleeding eco-friendly materials and dyes. This black tissue paper is perfect for gift bags parties wedding favors crafts or retail merchandise. You can decorate or accent your parties with these trendy colors providing an array of color for your guests.