This union suit is both cozy and comfortable. The arm length is just right for my long arms, but the size XL is a bit long for my 5'6" height. It droops in the torso, thus bunching up when I sit. It is perfect for sleeping, though, as I can stretch out and not feel any binding, as with some other long pajamas. The arm and leg cuffs are stretchy enough for comfort, but fitted well for warmth. I would recommend this product, both for warmth and comfort.
My daughter wanted the pink color and she loves it. I got her a size M and it has enough room to move around and sit. It washes great and she wears it alot.
The union suit is extremely warm and comfortable. It will not shrink, absolutely no shrinking. This product is very warm and comfortable a delight to wear. I only wish it came in more than two colors.
On the positive note, they are warm . . . however the backside is just so ill-fitting and poorly designed. The first time you open that button, that's it -- the button won't stay closed ever again. The hatch needs to be redesigned. Instead of a horizontal slit, it would be better to go back to the traditional two-button "trap door" flap. Not only will the slit not stay closed, the non-buttoning button is located smack in your backside where you sit (ouch), and the slit is also fairly useless as far as being able to use the facilities without becoming completely undressed.
This was a deal-breaker for me. I will be returning the union suit for long underwear separates.