The mini is large enough to lock your bike to a meter.

You place it through the rear triangle around the rear wheel and meter only.

It is not large enough to include the seat tube.

The idea is that it is very hard to cut through a rim and tire.

Some people do not agree.

If someone does attack the lock the frame is not subject to torquing.

That's the idea anyway.

FWIW, I use the mini for short term lock up. Bike's always been there. For now.

For long term lock up, in dodgy territory, it's probably not optimum.