These are good for an under- layer.
359244
For the price these are fine for as an under layer.  They don't have any shape so feel tight or short in the butt.
The length is a little short.  I wear size 6-8 with 30" length.  Not my favorites but in the cold mountains its always a good thing to have some extra long under ware around.
4307198
These are pretty good, though I prefer the polyester-based style of shorts. These ones are nylon based and I don't like the look & feel quite as much, but this just be a personal preference.

I wear these as a layer underneath board shorts when I'm out surfing. This prevents chafing and rash. They are doing just fine in the salty ocean water, always give them a good rinse in cold fresh water.
1001087
These don't come up too high, which is just fine. I have a fairly ample posterior so the back doesn't come up as high as the front. The waist band is wider, which helps avoid any mushyness rolling over. I'm heading to tropical climates this summer so I think these will work well under skirts and keep my thighs from rubbing together too much. I could see forgetting that I'm wearing them after a while. They aren't cotton, which means they'll keep their shape, but we'll see how well they "wick" sweat.
843932
work well in weather above 40 degrees. had to spay them with weather protector to wear them in temperatures below that. the fit was good and material was comfortable.
4604113
Good under shirt that gives just a nice amount of compression/support.
975322
They fit well and provide light leg support and are not too hot.
4448485
These are good for early spring / late fall, but probably too thin for the dead of winter or very cold climates. Fit was good.
4179806
Fit well.  Worked well under jeans for added warmth for short periods in the outdoors.
1247446
got them large to layer under and on top of clothes.....
1449913
Wife wears these to work underneath a t-shirt to keep a little warmer,  She likes them, and they're not real bulky.  So it's a comfortable fit.
2320245
These are pretty good, although they don't stay warm well if you don't have shoes on, just walking around the house. They're very spongy and full of air pockets, which works well inside your shoes to hold in heat. They do wash well.
1037081
These are somewhat small... and fairly see through... However, I bought these to wear underneath sweaters, football jerseys (WHO DEY!!!), etc... and they work perfectly for that.
3721173
Light weight, good for under fleece sweatshirts in the winter and fits the business casual attire required at work.
They will shrink, hang to dry for longer life.
4690173
I like these because they wick moisture and are not to warm.  Skied wearing them in 20 temps with just a pair of light-lined ski pants and I was comfortable.
4182225
The texture is not very luxurious but they work as covers under other covers (e.g. these are the ones I use under my decorative covers).
1292556
These are very comfy and work well for layering, but if you're even a little bit busty you'll be spilling out of the cups.
4356204
These underware are comfortable and breathable.  The sizes run small, so I suggest purchasing the next size up if you are on the borderline of size.