Fully lit! I bought these very cute pants for myself (adult, 4'11, size xs) because we are traveling to Morocco and I wanted something airy and light. The child size (11-12) fits me better than an adult in these types of pants, but unfortunately I can't find them there unless I'm wearing lining or spandex underneath. However, they would be great for Hawaii by the pool and out in the ocean with my swim trunks, so I'm keeping them.