Pop into early learning! Budding builders use a hand-powered rivet tool and rivets that "pop" when they place them to complete the patterns on the colorful cards with this pop-n-play construction activity set! Details: Multicolor 9.6" x 9" x 9.25" package size For ages 3 and up Contents: Storage case activity board Rivet popper Rivet remover 40 colorful rivets 10 double-sided pattern cards