Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: every thing but the pens
Review: My 6 year old son LOVES this spy case. He got a lot of ALEX toys from Santa this year and this case is, without a doubt, one of his favorites. Everything about the case is great except for the invisible ink pen (the white pen) and the developer (the black pen). The pens do not have clips on them so they fall out of the case all the time when placed in their proper spot. This is annoying but can be "MacGyvered" by putting the pens in the netting for the fingerprint materials; there is lots of room there.Santa had to go to quite a few locations in a couple of towns before finding the Spy Case with Amazon. The toy is great. It was worth it the search.
