Bought 2 of these and love them. Well built, nicely designed and easy to use. Made testing easier, by eliminating one more friction of unpacking and packing the tests. I like them so much that when Dmitry followed to see whether I was happy with the caddies (nice touch) I asked him whether it’d be possible to do ones for API test kits. Included in the package was also a cute thank you card which my daughter loved. Overall a nice product from a nice person.