I recommend these for daily use as well.

I have a small bar bag on my Florida Man, but the bag is not waterproof.

It’s a pain in the neck to remove the bag each time I arrive at work, and to take everything out when I put my stuff individually. This is where the Stuff Sack comes in handy!
You could put everything in the Stuff Sack and throw it in the bar bag. It’s easier to take out and waterproof.
The 5L Stuff Sack could fit a wallet, a light jacket, a t-shirt and more. If you have a bigger bar bag or a basket on your bike, I’d recommend the 10L size.

