PUMAWomen's Seamless Sports Bra

Is this sports bra good for running?

What size should i get for a 34A?

What size should i purchase if i’m a 36b? i usually get an m but another 36b buyer said an l was too small in the rib cage. thanks!

I am 5'7 about 120 lbs im fit and wear a 32ddd or 34dd what size should i get? the size chart doesn't exsist.