3D PUZZLE . 1)materials: PP,PET, PS 2)it can help childen improvetheir hands and brain ability 3)it is welcomed by children Our lenticular products: 1) Lenticular cards: lenticular playing cards, postcards, collection cards, conversioncards, notebook or magazine covers, CD or jewelry box covers, watch surface,greeting cards, phone cards, hanger cards, VIP cards, calendar cards, magazineinserts, ...