• Non-toxic and safe: our puzzle glue sealer is made of PVA as raw material. This water-based adhesive is highly transparent, strong sticky, odorless, environmentally friendly, 100% non-toxic, safe, and environmentally friendly for both children and adults. • Easy to use: the puzzle adhesive is equipped with a sponge head, which is more practical and convenient. You don't need an applicator. Press the glue onto the puzzle and apply the glue evenly with the sponge evenly. Even children can do it accompanied by parents. • Wide application: this transparent puzzle adhesive is suitable for different papers, wood, books, picture books, etc. It is not only suitable for paper/wood from 1000 to 3000 puzzles, but it is also ideal for diamond painting and other crafts. Meanwhile, your masterpieces can be perfectly preserved, which is the perfect choice for home activities with the family. • Keep out of reach of children under 3 years old.