Viga Toys growing butterfly layer puzzle Puzzle the four layers of this layer puzzle to discover how the butterfly originates. The puzzle becomes more and more challenging, starting with the eggs from which a caterpillar emerges and finally hatching the butterfly! A combination of fun and learning! Specifications: Color: multicolor Gender: junior Material: wood Dimensions: 18 x 18 x 1.3 cm (L x W x D) Age: from 3 years old Number of puzzle pieces: 21