KryptoniteEvolution Lite Mini-6 Bike U-Lock, Lightweight Anti-Theft Bicycle U Lock, 11mm Steel Shackle with Keys, High Security Lock for Bicycles Scooters

It fits in a back pant's pocket which was the selling point for me. Perfect for quick trips around town when not wanting to carry a lot of things or weight. The shackle size is a limiting factor, so it may not work well in all instances, but I use it on street signs. I bought it for that specific use, so I'm happy. A lamp post or large diameter bike rack may prove problematic, but it would also work well as a second lock to only lock a wheel to the bike frame in case your biking grounds have wheel thieves. Being lightweight and compact makes it a great supplemental lock if you like to use multiple locks.

Been using an Evolution mini 5 for about 10 years or so... it's a bit heavy for my travels but its still intact....Saw this lock and just had to get it is very light weight and bit longer and narrower than my other lock...but still fits in many places to lock up around the city for quick stops.....has improved features that i like very much.....would recommend...

I bought this for its light weight and in this department it does not disappoint. I wish it came with a frame mount like the others, but its lightness makes it possible to just clip it around the frame or handlebars. One issue I run into all the time is the key getting stuck. I'm not sure why it keeps happening but it's really annoying to spend upwards of 1 minute trying to lock it when it should take 5s. And it happens with remarkable frequency. There's definite a design flaw to be looked at here.As far as size, I am almost never able to put my bike *in* the racks. I always have to put my bike on the outside and line my frame up right next to a tube I can attach to. So far this hasn't been an issue.

I used it for months. Easy to take around. Pretty light as well.

Don't let the description fool you, FlexFrame-U Bracket is not included. Otherwise light weight lock. Pretty thin. Not sure how strong against bike robbers.

The lock was good but little bit small for my electric scooter so I return and I bought the bigger one

This is a good lightweight U-Lock. It's not perfect, but it's pretty good. A few notes.- The "LITE" label seems very silly. Why advertise that it's lightweight. Luckily this came off instantly with a tiny bit of acetone / nail polish remover.- This is on the small side of U-locks. I've found that I can generally lock to most things by going around my rim and tire through the rear triangle and to a solid object (Sheldon Brown's method) with my large 55mm wide tires, but on some objects it's a bit awkward. If I just go around my steel frame tube, then I can lock to many things easier.- My wide tires (55mm wide) press the two legs of the "U" apart when I put it over the tire and it is difficult to install the crossbar. Once I figured this out, it is not a big deal and I can gently squeeze the legs back together with my hand to install the crossbar. But it was very frustrating before I figured this out and I just couldn't get the crossbar on.

I like the size and weight of the "Lite" version of the Kryptonite U-lock, but on receiving it, I am disappointed by the very mediocre quality of the lock mechanism. It is often hard to insert the key all they way and requires quite a bit of wiggling the key around. And then it is also often hard to turn the key once it is fully inserted and also requires some wiggling. Makes for a less than smooth and satisfying experience. This is not a cheap lock. Disappointed that they skimped on quality of lock mechanism.