The Trixie Wooden Animal Stacking Game is a challenging game perfect for little ones aged 18 months , and is a great way to help them develop their spatial awareness and coordination skills. The game comes with a set of cards with 3 different difficulty levels, so you can gradually increase the challenge as little ones skills improve. The stacking animals are made of 100% sustainably sourced wood, and all paints used are water-based and non-toxic, so you can rest assured that this product is safe for your children.