This unique morphing toy ninja star by Occasions is great for Halloween costumes and for playing. Just turn the dial and the three blades pop out. Lots of play value for Halloween and after. The item is 5.5 inches in diameter before the three blades pop out. The transforming action of the blades is really, really cool and your kids will want to do it over and over again. To close, just fold the three blades back in to lock into place. Then do it again.