I was there purchasing a Swiss ball today and walked though the Fitness clothing section.
I bought 2 mesh T-shirts for $5- each, but nothing else was large enough to fit with ease
If you need winter underwear for the white season and were unsure if you would ever commit to better known brands I suggest you take a walk though and check out what they have. Very good mesh T-shirts for first layer, good crew neck polyester long sleeves for the next layer, a similar layer in a full length zip and mock turtle neck and a very LW full zip windproof with hood for the torso
You would have a reasonable torso outfit for the warmer days for less than $55- providing you were not built bigger than an XL. Add a cheap fleece and a Uniqlo UL down and a LW storm parka and I think you would be OK.
The state of the art speeds up, all this clothing would really have been at the very cutting edge less than 5 years ago. 'No DWR on anything naturally but I would not really worry about it either at this price point and garment weight