Comfortable, reliable strap for capturing your heart’s electrical signals and sending them to compatible heart rate sensors. Key benefits Comfortable fit: Adjustable elastic strap lets you set a secure, personalized fit to stay in place during workouts or everyday wear. Skin-friendly materials: Soft fabrics reduce irritation and chafing so you can wear the strap for longer sessions without discomfort. Sensitive signal pickup: Adaptable electrodes pick up your heart’s electrical signals accurately and consistently, improving the quality of data sent to your monitor. Broad compatibility: Works with a wide range of heart rate sensors and devices (ANT+, Bluetooth 4.0, 5.3K), so it pairs with most trainers, watches, bike computers, and phone adapters that support those standards. What it does for you Solves poor signal and fit issues by combining soft, flexible fabric with adjustable tension and responsive electrodes. Keeps data transmission stable so your training zones, interval timing, and recovery metrics remain accurate across activities. Provides a comfortable alternative to rigid or scratchy straps, making it suitable for long workouts or everyday heart-rate tracking. Features at a glance Adjustable elastic strap — customizable fit for different body shapes and activity levels Soft fabric construction — reduces skin irritation during prolonged use Adaptable electrodes — designed to detect electrical heart activity with high sensitivity Compatibility: ANT+, Bluetooth 4.0, 5.3K — pairs with a wide range of sensors and devices Use scenarios Endurance running: Wear the strap for long runs to keep your heart rate monitoring accurate without chafing or slipping. Indoor cycling and studio classes: Secure fit and reliable signal pickup help maintain consistent power/HR data for structured workouts. Interval and strength training: Fast, sensitive electrode response ensures your watch or trainer receives immediate heart rate feedback during high-intensity efforts. Simple to integrate Pair with ANT+ or Bluetooth 4.0 devices and receivers that list support for 5.3K where applicable. Use with watches, bike computers, fitness apps, and training platforms that accept external heart-rate inputs via the listed standards. Materials and care notes Constructed from soft fabric with elastic components and adaptable electrodes for both comfort and performance. (Follow the care instructions provided with your device for cleaning and maintenance.) Compatibility and function remain as specified: comfortable, adjustable elastic strap; soft fabrics with adaptable electrodes that are highly sensitive to heart electrical signals; and compatibility with ANT+, Bluetooth 4.0, 5.3K.