The light came with an alternate mount that screws on to the handlebar but it makes taking the light off more annoying, and obviously removes the ability to freely put the light on different bikes
I was hoping this design was universal but none of the straps I'm seeing online have the screw hole. Well, there is one very similar strap but I'd have to pay 13€ postage on a 5€ item which offends me on a spiritual level
Voile straps come in a lot of different sizes, and the holes will work in your favor with the screw mount.
These things are amazing. I keep a few dozen of them in my car, and they've saved my ass a number of times. Once, they held the suspension together on a 12k lb work trailer until it could make it to a garage.
You think these knockoffs would do the job?
https://www.aliexpress.com/item/1005006743079176.html
Since it's a bike light and not something you'd die without if it fell, I'm sure the knockoff would be fine, but I've only ever used the original ones from Voile. I've never had one of those break on me.