These puzzles are made of high-quality thickened cardboard,which has good folding resistance and a smooth surface, and is non-toxic and renewable. Each puzzle piece is shape-coded for easy sorting. you can quickly find the right part to reduce the difficulty of the puzzle. Suitable for children and adults,fun and informative,can effectively inspire people's thinking, train their thinking,judgment and patience,increase fun.Good for free time and family entertainment. 500 Pieces Jigsaw Size - 67 CM X 98 CM ; Per Piece Size - 5.5 X 5.5 CM Precisely cut interlocking pieces ensure a finished product with a smooth, even surface Made in India