HearthSong&reg; Connectagons PopOptical OPEN-ENDED STEM PLAY - Kids can create endlessly as they develop essential engineering foundational skills OPTICAL ILLUSION PATTERNS - Inspire imaginative play with colorful optical illusion patterns WOODEN PIECES - Durable, natural materials that you can feel good about giving your children 264 PIECE SET - Unique shapes and sizes challenge kids to create free-form or geometric sculptures FOR AGES 4+ - Fun for kids and families! Break this set out for your next family game night