Knox Studio bag.
I bought this when my Lomo waterproof bag got a hole in it. Was more than twice the price at £65. It’s pretty smart though, so I’ve been able to use it for more work situations.
Had it a year now, never let me down. Totally waterproof. Straps on waist and chest spread the load.
It has three further non waterproof pockets which are too small for disc locks but ok for house keys.
Recommended.
I like Knox. My first one was still ‘patent pending’ and it lasted about 7 years commuting and travelling. Light and waterproof.