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There's a velcro loop thingy on mine so you can attach the bag to your belt to balance the weight.

I have a casualty blanket in mine. There is a zippered compartment/pocket in the back of the bag that holds that blanket nicely, if folded right.

I think you'll like that bag. I have one that I keep just for when I go out in the canoe. It will hold a lot of stuff.