Moving Comfort Vixen High-Impact A/B Sports Bra - Women's Get excellent support with the Moving Comfort Vixen A/B Sports Bra. This sports bra features seam-free interior molded cups for support and shaping. The moisture-transfer material doesn't allow sweat to accumulate. The Powermesh zones on the racerback design provide ventilation to keep you cool. 82% polyester/18% spandex. Imported.