Best warming layer for the money.
344513
Fits just as the one I wore in the Marine Corps as a grunt freezing through the Lejeune winters in the field. Was brand new never worn when I received it.
4594643
I like the mid weight best over the heavy weight. The heavy is thinker but in the end I think this weight is almost as warm and more functional and cheaper too. The fit it perfect. Not too big and baggy and long. But not tight. Perfect.  I find the similar carhart to be sized too big (I'm a large and the carhart large is too big but the medium is tight around my chest).  I wash it inside out and dry it almost completely dry but still damp and lay it flat on my bed. No shrinkage. Holding up well. Money well spent, nice stiching and construction.
4650655
Great air trapping warm base layer.  Washes easy and dries quick.  Great colors available also.  These could be used as insulation under running sweats or under hiking pants.  Very warm.  If you are in the SoCal flat lands as I am, choose the light weight unless you go into the mountains as I do.
3812748
I wear this to Fairbanks Alaska last week for north light viewing, It is -20F~20F there. Wear with a thin layer of warm underwear and this nice down filling jacket&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/ZeroXposur-Men-s-Relay-Packable-Sweater-Down-Forest-M/dp/B01K8XC3OY/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">ZeroXposur Men's Relay Packable Sweater Down, Forest, M</a>&nbsp;and 686. Born in warm place and never seen so much snow in my entire life. This product light weight and keep me warm. Did a little bit hiking upon to the top of snow moutain, which made me hot but not sweaty, the wind is cold and bite my face, but my body is too warm.
4602003
excellent for the money. kept me warm all day long in 20 degree weather. also great on snowy days. I notice when I wear this camo, deer do not seem to pick me up when in a tree stand or on the ground.
1630405
Excellent heat generation.  The only thing I don't like is it's too "slippery," so the covers slide off if I move about too much during the night.

My big worry was I've read a lot of the new electric blankets are too weak, and warm only a little.  This one does seem to generate plenty of heat.

My googling around is what led me to Sunbeam as the one brand that still gets very warm.
1572531
Apears to be very warm and it wonderful for the price. I ended up buying two! What a wonderful deal.
3013096
have used 3 other cool vests which didn't work as well, and cost much more.  this keeps me some what comfotable up to 105 deg F. a life saver over 110
157894
Our house is kind of cold throughout the winter and I live in warm base layers. I've tried the "waffled" thermal underwear from Hanes and Fruit of the Loom and they're ok but a little bulky and don't last too long. I also have much more expensive mountaineering type base layers that are warm and tough but I don't care for their slippery feeling (no cotton in them). These mid-weight Duofolds seem to hold up well and are very comfortable. The blend of 60% cotton, 40% polyester seems just right for soft comfort and good wear. Price is pretty good when they're on sale, not so good when they're not, but they still seem to be worth the near $20 price.
1034453
Lightweight and very soft.  I use two of these and that is all I need to keep very warm with keeping our home in the mid 50s at night.
3266381
This base layer is very cozy and warm.  Very soft fleece that keeps me as warm as my mid-weight Merino base layers.  Breather well, too.
930860
So my feet are constantly cold, in the fall winter. I usually sleep in pants and a shirt and with socks so I'm warm. This blanket rocks. I turned it up to level 7 and woah, that was way to warm, i find that a good sleeping temp, even though its a bit cozy is level 2. it gets really warm, really fast. very happy with this product. easy install and fit our deep mattress.
2068170
I play golf when it's in the 20 and 30's outside and usually wear 4 layers of clothing.  I wanted to eliminate an extra layer of clothing to give my swing more flexibility so I bought a pair of these ColdPrufs.  I was using other basic thermals that didn't do the job.  However, these work great.  I was able to eliminate the 4th layer and stay even warmer in just 3 layers than before.  They are comfortable, larges fit well (5'10 and 200 lbs) and made of quality material.  Would definitely recommend.
247158
For the cost there is nothing better out there in my opinion. It packs down small and will keep you more than warm enough for the rated temperatures.
2084306
An amazing buy. I could go to Alaska in this thing. I put it over my business suit and you mass transit to got to work then pull it off like Clark Kent. Best $150 I spent to keep warm. Seems cut resistant too.  Great protection from the polar vortex.
1023383
This is a great economy transitional base layer. I use it for Fall days and heavier shirts for dead-of-winter days.
852148
Light weight and very warm, with room to.layer if needed