Cafe lock recommendation

[buggi]

If you're worried about losing the key, then keep it on the same ring as the other keys that if you lost them, you would be completely STUFFED; i.e., house keys, car keys etc..

All that extra weight!!! When I'm on a carbon bike?? Are you mad?

 

[Cuchilo]

I have this one http://www.giant-crystalpalace.co.uk/en-gb/gear/product/giant.surelock.air.loop/576/54708/
Spend your £20 on something else