This ancient Chinese puzzle includes 15 whimsically-illustrated cards to fit wood tangrams shapes. Some illustrations offer multiple challenge levels. Puzzle play helps children develop fine motor skills, cognition, and visual senses. They are manufactured using quality Russian Birch plywood and child safe German inks and finishes. Recommended for children 4 years and up !WARNING – Chocking Hazard- Contains Small Parts- Not recommended for Children Under 3 Years Old