am looking forward to the first trips in the spring, when we gather and watch little creepy crawlies. The price is absolutely great - I paid with shipping less than 4. the screw cap is unfortunately off easily, this is the only shortcoming. but I had not expected such a good product for the price. Magnifiers by two, with which one can enlarge the details differ, you can examine objects wonderful. below the bottom of the cup a small grid is printed to estimate sizes (which I find personally but rather superfluous). for my son (2 years) it is the first Becherlupe and we'll see how it matters to him, since he is still very small. further away I would the cup only to children over 4 years - but I'm just too impatient to explore all of the great things with him.