I have bought 3, 2 peice long under by
Duo fold from amazon and this is my 1st
1 piece or union suit from them .

So far my only complaints are becarful you
Don't rip it if you store it in your dresser draw
And unless your in to that kinda of thing I don't
Trust the rear compartment for going number 2
Unless you and your significant other....

The 1st chest button up to the neck can be
A lil tight to breath let alone flex ,
And I like to keep 2 groin buttons loose
For going number 1 .

But I went and bought another in classic red .

I wear a t-shirt and boxers under mine.
As far a cold weather goes you may want to
Try the carharrt version but the duo fold is
Good for slowing down the cold .

The navy version would work well if you wanted
To cosplay as fierce diety link from majoras mask.

I give it a 4 outta 5 it's not warm /thick
Enough imo.