I HATE racerback bras. Having anything putting pressure on my traps gives me migraine headaches. This bra is so comfortable, the straps stay put and it's incredibly supportive even for DDs. I ordered an M and and L to try on, but I kept both because the L is so comfy to sleep in and the M is perfect workout-level support. I hope this becomes a permanent fixture in the lineup instead of just a temporary limited edition, because we need more good sports bras that are NOT racerback bras. Too many companies just make racerbacks and it's awful for those of us who can't wear them. This is literally THE PERFECT sports bra.