Heavy! I'm a woman and thought "Jesus. This is heavier than the bike".Ha. Determined not to be a 'wimp' I wrapped it round the centre of the handle bars to test its usefulness locally and a few miles away. Well you'd have to be one determined nut-job to want to remove this fat mama. Chunky, just a bit fiddly at first until you get used to the locking mechanisms and certainly does the job. I'm happy with. Certainly muscle toning and weight adding to any bike and the right length. I'm glad I did not get above this length. Very good chain covering. Not a case of quick release and go with this chain and lock. Factor in just a bit more time for this when parking your bike temporarily. Worth it.I've desisted from giving a five only because I want to see how long this lasts without someone trying to take this bike (having just replaced yet another stolen one. Grrr). The Gold Secure label is clearly on the lock and packaging.