This is a good product
I have had these for years and they have come in quite handy. They are easy to use. The only cons that I have are:1) it is hard to read the tiny numbers (even with my glasses on)2) when my son has a fever he sweats a lot and they do not always stay in his armpit.However, the readings have been pretty accurate, and I like the fact that you get a lot of these in the pack. So, if one falls off, it's no big deal to just get another.