I'm a Wiggy's fan I'll admit it. I've purchase a bunch of stuff from him and have not been disappointed yet. Regarding the fishnet undies, I've used fishnet underwear for probably close to 40 years off and on. There was a time when fishnet underwear was hard to find. The stuff I was wearing years ago, for some reason, seemed to get smaller as I grew older,
so I was without it for a number of years. When I first started wearing them I noticed that by simply adding fishnets as a first layer it added about 10 degrees to what ever I was wearing.
I wear fishnets nearly every time I go out hunting. I even wore them when it was nearly 80 in early October. I don't know if it made me any warmer in the hot weather or made me cooler by letting my sweat evaporate like it should instead of being soaked up by my outer shirt. I do think by keeping my shirt up off of my skin, the skeeters couldn't reach me to bite me!! I only wear the fishnet shirt, not the pants. My legs don't really get very cold if I can keep the rest of me warm. If you are going to buy Wiggy's fishnet undies I suggest that you call him about sizing. The fishnet seem to run small so you'll probably need to order a larger size.
https://www.wiggys.com/clothing-outerwear/fishnet-long-underwear/
I also wear Wiggy's jacket liner (
https://www.wiggys.com/clothing-outerwear/liner-jacket/) under a Winona Camo outer layer. Jerry Wigutow aka Wiggy, uses nylon outer material in all of his clothing. The outer material varies in the amount of noise it makes so if you're going to buy something from Wiggy it's best to call him or make a note on the order to use the quietest material available. All nylon material is too noisy to use as an outer layer but under a quiet outer layer, it works very well. Earlier this year I had Jerry Wigutow (Wiggy) custom make me a jacket liner using some parachute cloth that he recently acquired. The parachute cloth is very soft, quiet and wind resistant. I had him use his L6 insulation which is double the insulation of his regular jacket liner. Jerry will make custom products for you if you ask. When you call Wiggy's, 90% of the time it's Jerry that answers the phone.
I don't think anyone makes anything warmer than Wiggy's Lamilite insulation. Lamilite compresses down nicely, is very light, dries very quickly and insulates even when wet. Other insulation like Thinsulate, primealoft and others will loose it's loft if compressed for any period of time. Lamilite won't loose it's loft even if compressed for years. Wiggy's products are all made in Colorado and are of the highest quality. I didn't mean for this to sound like an infomercial, I'm just a satisfied customer.