All good solid materials. The tags are made of hard polypropylene which is reusable, reliable and lightweight Small, lightweight and will not increase your burden. Total size: 1.15 x 2.2inch, large label window size to write more words Each one is come with a label you can actually write on. Labels are readable from each side of the tag. And There is plastic cover for label so ink does not fade. The cover opens and closes easily. No need to remove the key ring to take out the label Great assortment. 8 Pack key tags with 8 colors, 2 for each color. Nice bright colors, great for identifying different keys for different locks Organizing keys is a key to organizing your life. These work great for name tags on keys, pets, kids backpacks, lunchboxes, childs jackets, luggage, USB drivers, or anything else that needs an ID