It seemed to help a bit during my longbow hunts, but I found that it certainly didn't mean you can ignore the wind. I would say that it gives a bit of a margin for error. I have been just as close to Whitetails with and without it. And that goes for being on the ground as well as in a tree-stand. I have sold my carbon clothing for more wool, tweed, and Bean boots! It just never felt right with a longbow or a .450 BPE double in hand! Maybe that makes me a bit of a luddite.
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