I bought this for my rain gear Lowepro Fastpack 350, because this Fotorucksack unfortunately not owned integrated rain cover. Unfortunately, I am carried away after studying several Rezesionen let the 20 - to order 30 liter version, as has been described time and again that the ordered quantities were usually too big. Well. This case is just enough yet to enclose my Fastpack 350. But the 30 - 40 liter variant would have been certainly not too big. By this I mean that some case studies such. B. "fits Fotorucksack, or Tourenrucksack A, B, or C" would be very helpful in the descriptions, for guys like me who can start liter information not so much. Quality default, the commodity is fully in order, and fits securely into any small bag.