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Merino is a type of sheep known for the softness of it's wool.It is 100% wool.
I fully agree with lost boy. Wool is the way to go.
Why does the insulation have to be in the boot and not the socks? Why not both? I checked out those Alpha Burleys and they look like they'd be okay for hunting ducks but they're only rated to -20 which ain't that great for ice fishing.
The Alphas come in all sorts of insulations. I have the 1000gram which are too warm, should have got the 800. I hate when companies list temp ratings because everyone's internal thermostat is different. For example, I used to be very involved in high altitude winter mountaineering and I could sleep comfortably in a bag rated to +20F in 30 below zero weather. Another person would be comfortable only in a 40 below zero bag. I also used to sell ski boots for a living and people would come in and tell me they get really cold feet in their ski boots. I asked them to show me the socks they wear and generally they were these super thick wool socks. I would ask them to do me a favor and try these next time, and hand them a pair of nylon or silk paper thin socks. Every single time they would come back and be amazed at the results. It goes against what people think, but it's simple physics actually. All insulation in our world is based on the same principle- trapping air. When we stuff our boots with 2 or 3 pairs of thick socks, we generally squeeze the insulation too tight and squish any air space out of the boots insulation. You can also reduce blood circulation in your feet which compounds the problem. And you don't want to buy a boot too big or you will never be able to heat up the space with your body heat.Anyway, the point is, everyone's thermostat is different. If your feet don't sweat a lot, you might be happy with a thick pair of wool socks. I am very active and my feet sweat in any boot which makes for cold feet, so I use paper thin socks and in my Alpha Burleys my feet don't get cold. I fished last year in 20 below ambient air temps and my feet were cozy and warm. But I still say if you have the right boot that fits well, you should be able to use very thin socks.
Love my Smart Wool socks! The key is what % of Merino wool? Smart Wool I believe is in the 70% or higher. I purchased a cheaper pair of Schools brand that had marino wool but only 35%..... they sucked! Smart Wool all the way for me!
people socks are 71% merino wool, and 400% cheaper