I love these, good strong magnetic material, they hold really good. They are thicker than other brands I've tried (it seems that magnetic strength is directly proportional to thickness, in these types of products), but these aren't so thick as to be a nuisance, they are just perfect. My store is often out-of-stock of these (they always seem to sell really good, unsurprisingly) so I buy bunches of them when I can, so I don't run out (because at the time of this writing, this item is in-store only, can't order it online, at least not from Walmart, haven't checked elsewhere). The magnet is strong enough that even for somewhat-heavy thick larger custom-made notepads, you can put several of these strips on the back of the notepad to create your own magnetic notepads. Just because the packaging might indicate that it's a kids' product, it's also a very excellent product for adults too. I haven't found any flaws in this product, been using it for quite a few years now. One thing I have NOT yet tested (due to lack of need/motivation), is to see if the ADHESIVE-backing of the magnet is temperature-sensitive or not, like if it'd been left in a hot car with the windows rolled up (or in a cold car at -10 Fahrenheit) does the adhesive still stick? It seems to hold up just fine with a few hours of household direct sunlight though. If I ever get around to testing the temperature-sensitive properties of this product I'll update this post, but meanwhile that is probably not something that most people would care about anyway. :) It's a nice product. NOTE: I would GUESS that it's probably (not sure though) too thick to use in home die-cutting machines (Silhouette, Cricut, etc), haven't tried that, I just trim it by hand (scissors or Xacto knife) or for straight cuts I use my Akiles Roll-A-Blade rotary cutter where it works just fine, cuts easily.