Army Green Nylon Bicep Band compatible with Whoop 5.0 One Peak MG Life Key benefits Secure, adjustable fit for upper arm wear. Adjusts from 210 mm to 400 mm (8 to 16 inches) to fit most users and sizes. Breathable and elastic nylon construction keeps the band comfortable during extended wear and intense activity. Durable, washable, and quick drying for repeated use without losing shape or stretch. Tool installation and one click removal. Precise cutouts provide access to buttons and sensors and allow charging without removing the strap. Designed for use with Whoop 5.0 One Peak MG Life compatible bands. Not compatible with Whoop 4.0. U shaped frame is not included. Features Size range: 210 mm to 400 mm (8 to 16 inches) for adjustable upper arm fit. Material: Soft, elastic nylon that is lightweight, flexible, and breathable. Fit and function: Elastic design holds the device in place while permitting movement and airflow. Maintenance: Machine washable or hand wash, quick drying for convenience. Installation: No tools required for mounting or removal. Click style fastening for fast changes. Recommended use scenarios Outdoor running and trail hiking when wrist placement is impractical and bicep monitoring is preferred. Strength training and gym sessions to keep the device secure on the upper arm during repetitive movement. Cycling and other active sports where a low profile, breathable band on the bicep improves comfort and stability. What is included and important notes One Army Green nylon bicep strap compatible with Whoop 5.0 One Peak MG Life style bands. Does not include the U shaped frame. Not compatible with Whoop 4.0 models. This bicep band offers an adjustable, breathable alternative to wrist wear for users who need a comfortable, durable strap for upper arm placement during everyday activities and focused training.