Stoney Creek ones are shit. I have one and it does not breathe at all and builds up moisture inside at an alarming rate. Have messaged stoney creek about this and they just fobbed me off and basically said "it's designed for sitting around camp, not exerting yourself" yet can't even sleep in it, don't even need to get warm and you end up a damp mess. I wrote a post about this on one of the FB hunting pages and a tonne of people said exactly the same.
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