Contact your local VO dealer and hit them up.
Similar in price to the Rivbike shopsack but without the crazy shipping, plus it’s waterproof. Cheaper than the Chrome duffle40 or whatever it’s called and also has a rear pocket. Much cheaper than an ILE or a Swift. Noice.
The zippers are waterproof, so there’s no need for a flap.
Not perfectly accurate. Has laminated zips, and they face up. So it’s gonna handle a shower or a short while in rain, but it’ll start getting wet inside when riding for any greater period in real rain.
There’s a reason the Macpac Prophet and Resolution hardshell jackets still have a flap when many other brands (and Macpac’s lower-end jackets) are resorting to laminated zips. Trying walking in the West Coast of NZ, or in Tassie in winter, with a laminated zip jacket. You don’t stay dry long.
So I’d still rate the Chrome duffle (which is roll-top) or the Ortlieb trunk bag (which has a “TIZIP” real waterproof zip) over this for keeping dry.