Osprey Radial - reflective rain cover that fits?

The original rain cover on my Radial has seen better days.  Id like to replace it with a super reflective one for winter commuting but having problems with fit.

It's 24L unexpanded but longer than you would expect due to the frame.

I tried one of these in standard size but it was too small.  The large size lasted a few weeks before it tore open.  😐

www.amazon.co.uk/Salzmann-Rucksack-Reflective-Waterproof-Rainproof/dp/B07TRMGW3H

Considering the provis cover as it's on sale but not convinced it would fit

https://provizsports.com/products/reflect360-backpack-cover?country=GB

Anyone else have this problem?  Did you find something that worked?

Thanks in advance 😃