This bra is nothing like the "step into" bra on the TV; it fits well, feels that way all day and is super comfortable; because it has hooks that adjust and the fabric is top-notch it washes and wears very well.  I am 36C+ and wear a medium in this Bali bra.  I found pull on sports bras and those other brands on TV not supportive enough. I don't suggest you run in this bra though!