waterproof jacket to go over race hump

I remember a thread on here about this but its not coming up in the search! I'm looking for a good waterproof jacket that will go over a race suit with a hump!

Would I need a size bigger or are they oversized anyway?

Cheers

 

Decathlon, £12 jacket XL does me when going round Europe and works well enough

 

I use this alpinestars waterproof jacket and it works fine over mine. Worth trying one on in a shop over your leathers to get the right size.

 

Arpenaz 100 Rain Jacket QUECHUA - Jackets Hiking - On sale at Decathlon.co.uk

That's pretty much what I have used on trips over leathers, and its smart enough to wear down the pub / off the bike of an evening too if you are away on the bike

 

I too have the Alpinestars.

 

Rev'It do some great ones...

 

I had the same problem with the hump (I have Alpinestars RC-1), and bought Rev'It Cyclone H20 Neon jacket.
It fits perfectly, I went only one size over my normal size.
Highly recommended, fully waterproof and you'll be visible from a mile