There's a sewing thread (boom boom) somewhere...
EDIT: here http://www.lfgss.com/thread35064-4.html
Edit my Edit: might be tricky as you'll either need to unpick the seam to put the strap in, or sew it on the back or side, which will be awkward and affect the waterproofness.
@Wicksie started
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There's a sewing thread (boom boom) somewhere...
EDIT: here
http://www.lfgss.com/thread35064-4.html
Edit my Edit: might be tricky as you'll either need to unpick the seam to put the strap in, or sew it on the back or side, which will be awkward and affect the waterproofness.