I'm on a constant search for a new puzzle for my 5 yo daughter and I thought the double-sided aspect would make it more challenging fo her.. I also didn't recall seeing for 3+ when I ordered this puzzle. The pieces are rather big and the colors are clearly different on both sides, so my 5 yo worked on it for probably good 10-15 minutes and it was done! I'm sure my other 20-month-old toddler daughter will have some fun with it when she's ready to solve puzzles but for now she only likes to walk on them! Overall it is nice looking puzzle of a very good quality and I woudl definitelly recommend it for the appropriate age.