Use these glue sheets to protect your completed jigsaw puzzles. They're great for puzzle enthusiasts. Each sheet is 6.75' x 6.75' and there are 12 in a set, enough for different puzzle sizes. You can quickly and easily protect your puzzle by peeling and sticking the glue. Keep in mind that eye contact may cause irritation. If that happens, flush with water for 15 minutes and consult a doctor if it persists. Not for kids under 13.