But it seems a bit like a 7 liter unmanagable blob. The mounting holes are quite small...
How did you manage to fasten it securily, tieraps?
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On top of the sleeping bag when it was full with a rockstrap. With our 1st stop after filling it up, 80-100km, I would fill the bike again, on the 2nd stop I would empty the bladder, fold it up and pack it away. At one stage we kept the bladder between me and the wife and had no problems.
I might have a picture that I will post.