NRS WaveLite Union Suit

Very comfortable, warm, and dry
I have both this union suit and a thicker one, but while the wavelight is lighter, it still keeps me warm and dry. It is very comfortable, with no irritating seams. The suit definitely keeps me dry beneath my drysuit too, which keeps the sweat from pooling. The suit takes washing and general wear much better than my thicker union suit; it stands up well to abuse and has quality zippers.

Very good
The zipper design is suprisingly good at keeping hair out of the mechanism. The material is suprisingly warm and the gusseted sections are very well designed. The seams are quite flat and not an annoyance. The suit lacks support for the male parts so wearing something below is still preferred depending on the activity (long-term hiking and snowshoeing for me). Also, it would be good to have a zipper all the way down and back up to the hips for long-term wear. Great stuff - keep it coming

Excellent
Received this a week ago. It fit perfectly, although I know that is dependent on the person, and not the product, but it did extend to the ends of my arms and legs and neck correctly, and really does conform to your body unlike most thermal underwear. It is very warm, even though the ad says it is mid-weight; I would put it at heavy weight. Also the navy color is significantly darker than the picture suggests.