What kind of thermos do you use for base layering?  temperatures where I live will probably be around 30° to 45° weatherwise range. I’m going winter fishing for the first time and I’m from southwest Florida. But I’m looking forward to it. thank you for your input.

Low of 30 base layer is jeans & short sleeve Columbia shirt. Low of 45 base layer will be Columbia shorts & shirt with sandals for when I get hot.

30 usually climbs to 50 - 55 and 45 will normally hit 60 - 65. Hopefully that makes sense. 

Working/fishing outside in the cold for my entire adult life; it's a system based on 3 theories.  Don't get wet or sweat, layer up, break the wind.  So for base layer, any of the comfortable manmade materials that wick moisture away.  Fancy/expensive isn't really necessary and I don't even own any anymore.  

 

Feet are different though, the more you layer up the less your toes can move and the less heat you can muster.  Spend all your fancy clothes money on good wicking smartwool socks.

 

scott

 

I got sherpa lined sweatpants off amazon this year as a base for hunting and I've never been warmer. Keep in mind i'm static in a tree, if I was hiking around at all it would be way too much. 

 

I got a heated vest over an under shirt and put it on 30 minutes before heading into the woods on low and then a thermal quarter zip sweatshirt with my jacket over that.

 

Sock liners also made a huge difference in keeping my feet warm this year.

 

Layers to strip and keep yourself from sweating. Moisture is your enemy.

 

I have been wearing cheap Amazon thermals ($25/set) for 7 or 8 years.  As good as any I can remember owning.  (Though not as warm as the 60's era down quilted stuff I had growing up 😀)

Doesn't take anything too fancy for those temps. I'm usually dressing to fish in weather that likely won't make it up much above freezing for a high. Merino Wool is the way to go for the real cold stuff, but I've got an assortment of cheaper thermals from a bunch of different brands for warmer temps and they all do just fine. 

At those temperatures the biggest thing is going to be a shell (rain jacket) to shield you from the wind and then just layer whatever you have underneath that. The difference with fishing is you aren't really moving much to generate extra heat. I'll hike in 10 degree weather and be down to just a long sleeve shirt because I'm generating heat with my movement, but standing there twitching a jerkbait every 15 seconds I get cold in the 30s very quick. Usually I wear a longsleeve shirt, then a fleece-lined sweatshirt, if it's really cold a down coat, and then a shell jacket over that. 

 

Also the difference between 35, dead calm, and sunny, and 40 with clouds and 20mph winds can be striking. The first is enjoyable, the second can be torture if you aren't ready for it. 

Upper 30s and 40s (I don't boat fish lower than upper 30s) my baselayers are two thin, wicking thermals.  Like others have said, I don't think there is a magical brand you need.  I have a pair of heavyweight Cabela's tights and then wear a looser, thinner pair of Marmot thermal underwear over the tights.  Those layers are thin and warm giving me full flexibility.  Cargo pants/jeans over those and then Guidewear uninsulated bibs.  I've never been cold fishing in my boat wearing those on the bottom.  

Shorts t shirt sandals, ball cap. All year

I really enjoy these. Their batteries are rechargeable and last a long time. The hottest setting is too hot for me:

 

amazon.com/dp/B0CG65PYBV?ref=nb_sb_ss_w_as-reorder_k0_1_10&amp=&crid=1IO7B0ZS3ZHBS&amp=&sprefix=handwarmer

21 minutes ago, Swamp Girl said:

I really enjoy these. Their batteries are rechargeable and last a long time. The hottest setting is too hot for me:

 

amazon.com/dp/B0CG65PYBV?ref=nb_sb_ss_w_as-reorder_k0_1_10&amp=&crid=1IO7B0ZS3ZHBS&amp=&sprefix=handwarmer

This is a good one. I was given a set of these and put them in my muff when hunting. My hands have never been happier.

I’ve got a couple midweight pair from REI that work well. They have light thru heavy weight, depending on how much those temps bother you.

My layers totally depend on temps and wind and precipitation.  Normally, in anything around 40, it’s sweat pants under bps pro Qualifer gortex bibs.  If guaranteed dry weather, I have found the most versatile piece of clothing is a sweat shirt lined hooded windbreaker.  Cheap and very versatile.  If there’s any chance of rain, it’s the pro Qualifer jacket over a vest or sweatshirt.  Key is to not overdo it.  It’s better to be a little cold than too hot and sweaty. Once you dip below 40 or have the chance for wind and rain, all bets are off and it’s a totally different wardrobe.  The colder it is the more I layer.