This set includes 4 foam sheets, each with 42 punch-out stickers in 12 different sea-themed designs. These self-adhesive stickers are perfect for notebooks, water bottles and computers. These mess-free stickers don't require glue and are easy for children to push out of the foam sheets. Create underwater scenes, or mix and match with other stickers to great new worlds! Crafting with stickers contributes to the development of children's fine motor skills, hand-eye coordination and creative expression. The stickers are non-toxic. For ages 3+.