Workout in this seamless, underwire sports bra Built for high-impact activities such as running Encapsulated cups support each breast individually Breathable, lightweight spacer foam-lined cups Comfort straps gently cushion the shoulders Customize your fit with back adjustable stretch straps Converts to racerback with J-hook converter Moisture-wicking stretch microfiber Hook count: 4-hook = Cup size F-H 67% Nylon 30% Polyester 3% Elastane Hand wash Line dry