Safely intrigue toddler's curiosities with this 15-piece set of smooth-sanded, nature-based Toddler Branch Blocks. Children 18 months and up can explore size and shape relationships through simple builds using the oversized boards, wood cookies and branch shapes in this set. Made from authentic fir branches, pieces can be used during stacking, sorting or STEM activities indoors or outdoors. Store indoors in a cool, dry place out of direct sunlight.