EVOLUTION wooden 3D puzzles for children can be mixed. The same colors are used for all the models and you can mix 2,3,4 ... 11 models to increase difficulty ... instead of buying new puzzles with more and more pieces. EVOLUTION 3D puzzles are made in Europe with sun dried beech wood from Alps. Colors are 1OO% naturals, without biocidal agents. If you like creative leisure, all the models of EVOLUTION Puzzles are available To Paint Oneself and you can decorate your kid's room with his favorite colors. MODELS SIZES (cm) and WEIGHT : Hedgehog 17x12x1,5/152g - Elephant 16x11x1,5/130g - Fish 17x10x1,5/112g - Pricess 15x17x1,5/131g - Prince 15x15x1,5/107g - Dog 18x13x1,5/142g - Snail 15x11x1,5/113g - Horse 17x12x1,5/85g - Rabbit 16x12x1,5/101g - Butterfly 13x12x1,5/111g - Turtle 16x10x1,5/103g