I bought this because I prefer sleeved leos, but it's getting too hot to wear them now. This is nice because it's between a 3/4 sleeve and a long sleeve. Plus I'm more comfortable when my arms are covered. This keeps you cool and it's flattering on me. I'm 5'5, 125lbs, and a 32D. I bought a medium. If you're like me, this leo is great because it's snug enough that you don't need to wear a bra. However, It's slightly thin material, so if you wear tights, they're faintly visible. But it's hardly noticeable when you start dancing.