holds 'em in place.

This is the best sport bra I've ever used. Great support and very comfortable. I am a 38DD in my regular bra, and I got a 38D in the Fiona bra. It's nice and snug but not tight at all. Material keeps you cool and comfortable straps do not dig into your skin like sports bras from the past. I use mine for jogging, about 3 miles, and keeps everything in place the whole time.