235Z Ace Compression LP Sports Bra, based on human biomechanics, Target Compression System focuses specific coordinating muscle groups and joints of the female body. Compressing shoulders and scapular muscles to avoid excessive kyphosis that is commonly seen in females. Encircling the medial aspect of the shoulder muscles to provide clavicular stability, which enhances physical performance of the shoulder. A comprehensive support of the bust that greatly lessens any uncomfortable breast movement during exercise. Thus, allows women to maintain proper and elegant postural alignment during exercise.