A great Rain-cover with practical outside pockets and extremely highly visible design. Ideal for rainy weather, even during the day! Unfortunately, I can not understand the specified 35l backpack size. My 30l Deuter Trans Alpine surrounds the thing only if it is completely empty. As soon as he is only half full, the cover slides up or down from the backpack. Also, the Trans Alpine Lady 26l does not really pure when it is full.
For slender backpacks to 25l sure great but everything bigger does not fit purely. It's a pity that there are not several sizes!