We buy these all the time and they’re very sturdy and we color code everything so that always helps!Once you open them to label them, they do not want to properly snap closed and remain closed.Whenever you have a new key, or find an old one, put one of these tags on it and label it so you will know where it’s used: next week, next year, years from now.Good for single use. Snap closer is hood but only snaps closed properly once.More than half of my order doesn't completely close. You should hear two snap/click sounds when the cover snaps into place under the two little tabs, but I am only getting one click, which means it's not completely closed. The label I made is liable to fall out at any time. The others ones at work, Sparco Key Tags, are much easier to close.The ones that do work are fine. 1 out of 3 that I used wouldn't close. There are two little plastic nubs that hold the cover in place. It wouldn't 'snap' under one or the other, instead bending the cover plastic under pressure. I tried bending it a bit to get it under, but gave up and just used another one. They're not too expensive so it doesn't really matter.I really liked these key tags. You can easily read the name when you close the cartridge flap. However, it was tough to open the tags at first, I had to use a fork to prop it open. I guess that only means the paper will very safe in there. Pretty and organized!I bought these to use as ID tags for backpacks, messenger bags, tablet sleeves, and anything else that might require an ID if lost in travel. They are smaller than luggage tags, which of course, is what I wanted. The ones that actually close are nice, 8 out of 10 worked for me. I replaced the paper on the inside, and used the dimensions to type up my own label. For reference the size of the label is 1" x 1.75"Yo había comprado hace tiempo unos llaveros así, pero los que me llegaron se batalla mucho mucho para cerrar la compuerta donde insertas el papel.Excellent quality. Will be ordering more and more.