There's three layers, the one closest to you is mesh. I'm returning the two colors I got. The second and third layer are too snug to look like the model photo. Size up.

This top is a thin mesh shelf bra with two layered tanks on top of it. The tanks are cute and fit true to size, nice lightweight fabric, flattering. The built in bra is awful. I'm a 34b, bought my normal Athleta size small. The elastic of the shelf bra is incredibly tight and uncomfortable and I can't imagine trying to fit anything over a B cup in it. There are no pockets in which to add modesty inserts and the mesh bra fabric is very thin. Total headlight situation. I like the tank portion enough to keep it but will cut the shelf bra out and wear my own sports bra underneath. (I also got this shirt with rewards points so…)