Wow - what a great alternative to $70+ high impact bras. As an larger busted person, I was skeptical. I ordered a size down from what I normally wear to get it tight. I really could run in this. I didn't feel a need to double bra. Other reviews complained that it was hard to get out and that the hooks were weird. I actually liked the hooks and racer back design. It worked well for me and it is my hope that it will work well for others.