I got one of these shortly after I bought a Zumo 595. I figured it was a good investment. Keeps it locked on the bike in Garmin's cradle.

Have had it for a couple of years and 35k+ miles. Works as advertised.

Don't have to worry about it bouncing out of the cradle or having it ripped off at a food or pit stop.

However, I DON'T leave my GPS on the bike overnight.

https://www.zumolock.com/index.php/nl/