Small bolt on toptube bag with rigid base

Seen a few people with toptube bags with a rigid base so when attached with a few washers it doesn’t rub the frame. Seems a great idea but not seen any for sale. Anyone know any bags with a rigid base?

The Tailfin ones get good reviews.  I tried one but found the hole spacing a little too close and very nearly stripped the thread on the bolt holes.  I sent it back and they replaced, next one was the same, and I did try in on 2 bikes.

Restrap

Restrap don’t do fully bolt on bags. They have a strap on the steerer tube.

got a restrap one, it’s floppy

and just bought a rhino? something or other from amazon.. the latter is actually really quite good…i prefer it to the more expensive one

I recently got just what you describe.  It’s not a desirable brand and it’s from Jeff’s mega-mart…  but is stiff enough and can be used with bolts only.  Comes with 3 detachable straps too.

https://amzn.eu/d/a4I25Dv

Tailfin. Didn’t have any issues with the fit on mine. Went for the very smallest size with zip not flap, to minimise leg-rub!

Tailfin.  Rock solid, no flopping. I have the flip lid version, great to use one handed with full gloves.

I like the Tailfin ones but after something smaller.