Pros: Design, Construction
I have several.
I bought several of these from a local knife shop for a travel kit. They stay on well, and have lasted about six years so far. They've been on knives constantly that entire time without spreading or losing grip. I also agree with another reviewer who uses them in the drawer. I keep knives in block, drawer or magnet bar, depending on use, and these are perfect for protecting blades from knocking against each other in the drawer, as well as hands reaching into drawers.