These are soft and thin. These would be nice under a long shirt, skirt, or dress. I'm sure I could also wear these under jeans/pants as an extra layer in the winter. When I tried them on I didn't notice that they were see through. I don't think that they are. I will update my review if they are. These are a basic legging and they washed up nice. I only put them in the dryer for about five minutes and then laid them out to dry the rest of the way.
**Update** I finally wore these and when I held them up to the light I stretched the fabric and I could see through them. It's winter right now, so I've been wearing Cuddl duds underneath. In the summer, I will probably still wear my Cuddl duds or double these up if I wear them solo, if I wear them under a skirt, I won't do that because my butt will be covered. However, these are super comfy and by far one of my favorite pairs of leggings.