Mi Pulse Size Chart The Mi Pulse Smart sports bra combines integrated heart rate monitoring technology with a comfortable and stylish design. Compatible with the Mi Pulse snap on HR monitor (not included), and a supportive, high-impact bra that will get you through the toughest workouts. No more chafing. No more distractions. Just you and your workout! Features: - Sport Bra only. Heart Rate monitor NOT included, but this model is compatible with the Mi Pulse monitor. - High-Tech Smart Fabric Sensors for Maximum Comfort. No chafing from hard plastic touching your skin! - Stylish, Comfortable, Long-Lasting Design - Machine washable