Feature: 1. Thinking Training: These letter construction puzzles effectively develop children's thinking, combination thinking and spatial imagination. 2. Discover Patterns: These letter number shape puzzles allow your little ones explore freely and creatively by allowing them to stack the shapes in any way they want. 3. Rich in Colors: These alphabet construction puzzles feature rich and bright colors that can attract the baby's interest and promote baby's ability to identify colors. 4. Hand Eye Coordination: These letter number construction puzzles will engage your kids to get the endless fun and encourage your child to learn through play, while developing their hand eye coordination. 5. Safe Material: These wooden stacking blocks adopt eco friendly wood material. Safe material ensures long service life, and it contributes to mindfulness trainings. Specification: Item Type: Letter Construction Puzzle Material: Solidwood Applicable Age: over 36 Months Product Size: Approx. 17 x 17cm / 6.7 x 6.7in ( Manual Measurement, Slight Error May Exist ). Package List: 1 x Puzzle Board25 x Paperboard26 x Wooden Block