Um what support?!?!

I'm so confused. I thought this was a supportive sports bra for C's and up??? I needed another sports bra for my high cardio workouts, and contemplated buying this for the longest time (I have previously bought a moving comfort racerback bra that I love but is now no where to be found) and seeing that there was over 300 reviews figured it would be awesome! Bought my regular bra size, which fits great and I love the non-racerback/velcro straps design, but here's the thing. When you say a sports bra is supportive, I'm thinking supportive under the bust and it keeps the ladies from BOUNCING. One of of two ain't bad right? It's definitely supportive under the bust, but the bouncing? I was simply trying it on and jumped up a down a couple times, and I couldn't handle all the bouncing. Oh and it's barely lined! So beware! Because if it's cold in the room, others will definitely know. This is definitely going back.