This is the softest fabric I have ever felt. it is incredibly comfortable and as such, prevents backfat line in the back. i also included a photo of what it looks like under a shirt and there are no bra lines which is a pet peeve of mine. while its not the most supportive due to its soft comfortable fabric, it is perfect for daily use. highighly recommend. will be purchasing more from this brand. I am an F cup and this fits comfortably.