I purchased this to use in combination with my Kryptonite Fagettaboudit mini... and let me just say... I'm about to "fahgettaboud" taking that heavy U-lock around with me everywhere now that I have a Hiplock. Well not really. You see I ride my bike through several hoods/sketchy areas and often park it outside for hours. This lock alone definitely would not stand a chance in The Bay, Chi-town, or NYC - if you live in one of those places YOU KNOW THAT, so don't pretend this lock will stop thieves. It won't; don't play yourself.What this lock does do prevent: 1) you from using two U-locks to properly secure your bike or a U-lock + a flimsy cable, 2) you becoming tired of carried 10lbs of locks around, and 3) you from not having a quick, flexible, and secure option when you don't have a standard bike rack. The functionality and convenience of this lock is very impressive. I put it around my waist when I received it and immediately could not tell it was there... no wonder it's so easy for me to gain weight on my hips lol.Pros:-cost, very affordable Gold rated lock-portability-reflective material at night-ability to change the sleeve to the super bright sleeve for greater noticeability-looks bulky, which may help thwart off thieves-flexibleCons:-velcro, this can get caught on certain fabrics... so make sure the velcro is lined up correctly-no key replacement option for the lite version. Minus 1 star for that because they generally promote key registration/replacement on their website, but did not mention that it's only available for specific lock types. This is a $50 lock... there are less expensive locks that can function practically the same way and still offer key registration/replacement.Overall I am very satisfied with my purchase and would recommend this to others as a secondary lock or one for quick stops. ...so long as you're not someone that easily loses your keys.