I bought this because it said Sold Secure Gold, which means that it has some kind of standard of security behind it. The chain itself is heavy and sturdy and feels the part, as does the padlock. The cloth protection helps you avoid damaging paintwork too.Of course the only real test is how well it protects the bike and to be honest i hope I am never sitting here saying it worked or didn't work!Security is really budget dependent, generally the more you spend the better it is, this chain is really good value combining the Sold Secure Gold mark with an excellent price.