QUICK-DRYING SUPPORT FOR MEDIUM-IMPACT ACTIVITIES. The non-padded Nike Swoosh Sports Bra combines compressive fabric with sweat-wicking technology to help you feel supported and stay dry during medium-impact workouts. Keep dry: Dri-FIT technology pulls sweat away from your skin to help you stay dry and comfortable. Move freely: racerback design lets you move naturally through your workout. Flat seams feel smooth against your skin. Stay supported: bra offers support for medium-impact activities like gym workouts, spin, cross training, tennis and running.