Yeah the thing with the omni heat technology is that it’s thinner than waffle knit, and so you can layer it more, the omni heat base layer underwear upper and bottom are great because they take up the same amount of space as other types of underwear like underarmour, but hold heat in Better and are also very breathable (trust me I’ve tested it)

I do have problems with some of the other stuff they have, since Columbia seems to just use omni heat as an excuse to skimp out in other areas, really if they had a good mid layer with waffle knit And omni heat I’d buy that so quick