I’m a 36 J or in U.K. sizes a 36 HH. But technically I measure 35 around the ribcage. Unusual size I know. If I size up in this bra I don’t have enough Velcro support around the middle. So I sized down. So now I don’t have enough coverage on the top. Which isn’t a super big deal working out at home. But I’m not about to go running in this. Or to the gym. I was really hoping to be out of having to wear two sports bras! The size I’m in now I’m about to go into not having enough Velcro coverage around the ribcage, meaning part of the strap is past the last section of Velcro. It’s a well made product. And if you are a regular or more common size this is a great option! But unfortunately I’m still in the land of uncomfortable and compromising for sports bras.