This has been outside all year long securing one of our gates. The chain is reassuringly thick and the shackle padlock works every time. Good, but only 4 stars as I feel its a bit pricey. I think it's design is good as the keyhole tends to hang so that it naturally points downwards, helping to prevent water getting in and rusting up the lock. Much better than some cheaper versions with different locks that just rust solid forcing me to get out the hacksaw just to open a gate.