Vaude Hydration packs

sofaboy73

looking for a new winter pack, something around 15-20L capacity to fitr extra layers in etc. form what i've seen, very much liking the look of the Splash 20+5, however can't find any details anywhere of what size resevoir it will take. 2L isn't enough for me on longer rides as i sweat like a beast winter or summer.

anyone know how big it will take or any other suitable recomendations?

cheers