The loosening starts out slowly at the beginning of my hike or workout but gradually gets worse and worse. I am in a panic because my SOBO thru starts in about 2 weeks and I have a backpack that has shoulder straps that won't stay tight. And, it gets worse and worse the more I sweat.
Is this normal?
Also, should moisture (i.e. rain, water, sweat, etc.) affect the ability of shoulder straps to stay tight?
Thanks,
Mike