Racerback is an article of clothing with an inverted "T"-shaped back, revealing the wearer’s shoulders and shoulder blades. Some styles may resemble an "X"-shape with rounded corners, but this should not be confused with [[criss-cross back-straps]]. Typically used for [[sportswear]], especially [[competition swimsuit]]s and [[sports bikini]]s, because the cut allows for more flexibility and movement of the arms.