it's a decent lock for the price, but the plastic housing for the lock is quite brittle and will crack over time - revealing a very slim lock (actually quite nice looking without the gaudy plastics - imho). i removed all the plastic around mine, and it nicely fits into my jeans back pocket when i don't want to carry any backpack.

i wouldn't trust the lock to a long park job, i use this for convenience - less than 10 minute parking durations. anything longer, i will either ride my folder, or bring along my kryptonite fu lock.