water proof box come bag for roof recess

[Marktwain]

perhaps a daft question , but as a newbie to this forum here goes:
does any one know of a bag or box that will fit in the front roof recess , that is reasonably waterproof

I know there all kinds o things that are not actually intended for this specific purpose that might (or might not ) fit.

does any one know of some thing that is designed / intended to fit in there??
thanks in advance 

Marktwain (Paul) 

BTW it a Westfalia Joker Mosaic POPTOP

[randamonia]

These are obviously not purpose made for these vans but if you can get the right size I can highly recommend them. I’ve used one in all weathers on the boot and they are superb.

https://boot-bag.co.uk/store/default/boot-bags.html

[Rascal]

https://nlavw.com/home/70-westfalia-dry-roof-bag.html

[Marktwain]

Rascal, randamonia, 
mant thanks for responses, the Westfalia bag looks like it will do the job, although I have found that soft luggage works best if you put some king of frame inside it should not be too hard to construct thatfrom marine 3 ply . I will give it a go, thanks again

[Rascal]

waterproof ex arm bag

I actually have this.. Yet to be tested in anger but is a good fit. When I have a Chance I'll take some pics