Customer Rating: Summary: Perfect Under a Skirt in Springtime! Comment: Yes, these leggings are thin...super thin and mostly cotton, perfect for wearing under skirts and dresses in spring when it's getting warm but you're not tan after a long winter. A great alternative to hot nylon tights. I've even worn them on moderately cold winter days with boots and dresses and been comfortable. A GREAT deal for the price; worth owning in every color! Customer Rating: Summary: too thin!! Comment: The leggings are terribly thin and are definitely not for the gym/yoga. If you're planning to wear a skirt over them it might be ok, but I don't recommend wearing them as is. You can see through them...particularly when you bend your knees or kneel....you'll expose your toosh! They're cheap for a reason...