I bought a set of these & they came in yesterday. They are basically really long toe straps. I used them on my commute today to hold my backpack on my rear rack & they are, by far, the best attachment ststem I have used. Cargo nets are great, but in order to work, I have to attach them pretty tight, but that can squeeze the backpack & crunch stuff like my lunch. Just an FYI, in case someone else was thinking about trying them.