I've recently started thinking about getting some new waders for fishing too. Haven't had any since duck hunting in the cold, 20 plus years ago. Based on my experience from then and recent research, I think breathable waders, combined with warm wool pants and socks will be a better choice than insulated waders. Do "layers" with your clothing inside the waders to stay comfortable with cold temperatures.
If anybody disagrees let us know and why.
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Yes those are rod holders bolted to my 94 quart Igoo