Define Seamless is one of our most popular collections and it's easy to see why. The seamless material is soft, stretchy and malleable, resulting in a piece of clothing with great mobility and fit. Tights , sports bras and tops in several trendy colors make Define Seamless the go-to series of training clothes for many different types of training. This scrunch sports bra with a racer back and logo elastic band has a scrunch effect at the front and is ideal for training.