WHOOP Bicep Band – Compatible with WHOOP 5.0/MG, Size S/M Jet Black, Breathable CoreKnit Comfort

The WHOOP Bicep Band is a soft, adjustable CoreKnit strap that lets you wear your WHOOP 5.0 or WHOOP MG on your upper arm for 24/7 activity, sleep, and recovery tracking without wrist interference.

Designed for people who prefer a wrist-free wear option, the WHOOP Bicep Band moves your tracker to the bicep so you can keep collecting continuous biometric data while wearing bracelets, watches, or when wrist placement is inconvenient. This S/M size in Jet Black uses a breathable performance knit for all-day comfort and fast-link adjustability for a secure fit during workouts, recovery, or daily life. Note: compatible with WHOOP 5.0 and WHOOP MG models; it is not compatible with WHOOP 4.0.

How does the bicep placement affect data collection?

Shifting the sensor to the upper arm preserves continuous data capture while changing the motion profile and contact surface compared to the wrist. WHOOP designed the band to maintain close skin contact and stability so heart-rate and movement metrics remain reliable for most uses.

• Stable placement reduces device wobble during dynamic exercise.
• Upper-arm blood-flow and muscle movement are well-suited for continuous optical sensing.
• Still captures sleep, strain, and recovery trends when worn correctly.

Will the CoreKnit material stay comfortable all day and during workouts?

The band’s CoreKnit fabric is engineered for breathability, stretch, and durability so it sits comfortably against skin during long wear and repeated training sessions. The knit balances softness with structure to avoid sagging or pinching while you move.

• Breathable knit reduces sweat buildup and irritation.
• Stretch fibers allow natural arm movement without loosening.
• Durable weave resists wear from frequent putting on and taking off.

How do I get the right fit and secure the band?

This S/M band includes WHOOP’s Fast Link adjuster so you can tighten or loosen quickly for a snug, nonrestrictive fit. Proper placement—mid-bicep with even tension—keeps the sensor flat against skin and minimizes signal loss during activity.

• Fast Link lets you micro-adjust tension on the fly.
• Follow sizing guide to confirm S/M suits your arm circumference.
• Re-check fit after intense exercise to maintain consistent contact.

What compatibility and feature limitations should I know about?

The WHOOP Bicep Band is built to house WHOOP 5.0 and WHOOP MG modules and is fully functional for continuous tracking when paired with those devices. It is not compatible with WHOOP 4.0, and some features that require wrist contact—like ECG measurements—must still be taken with a wrist-worn accessory.

• Compatible: WHOOP 5.0 and WHOOP MG trackers only.
• Not compatible: WHOOP 4.0 devices.
• ECG and certain wrist-specific readings require a watch or wrist band.

Who is this for? The WHOOP Bicep Band S/M in Jet Black is ideal for athletes, professionals, and anyone who wants uninterrupted WHOOP data without a wrist-worn device. Choose this band if you wear jewelry or a watch, need a less obtrusive placement during work or sleep, or prefer the fit and feel of an upper-arm sensor. It’s a simple accessory that expands how and when you can collect continuous biometric insights with compatible WHOOP trackers.