Stickers are acid-free and lignin-free.2 designs. INCLUDES 12 COLORFUL STICKERS: Create a celebratory classroom vibe with these colorful stickers. Pack includes 12 stickers in 2 different designs. Measurements vary from about 1-7/8″ to 3/8″.PERFECT FOR HOME OR SCHOOL: Motivate students to stay on-task and complete their work with these stickers. Featuring modern designs, bright colors, and uplifting messages, these stickers are ideal for grading papers, decorating assignments, or adding a special touch to classroom activities. Use them as a tool for positive reinforcement or to celebrate creativity, effort and everyday accomplishments. The options are endless!SMALL SIZE, BIG IMPACT: Each sticker measures about 1-7/8″ to 3/8″perfect for reward charts, folders, notebooks, and take-home papers. Kids will love seeing the cheerful designs on their hard work.SAFE FOR LONG-TERM USE: All of our stickers are acid-free and lignin-free, ensuring each sticker lasts a long time with colors that wont fade.