WHOOP Bicep Band Compatible with One, Peak, and Life Not 4.0 Versatile, Comfortable, Fitness Accessory for 24/7 Activity, Sleep, Recovery Tracker, Size L/XL, Jet Black

SUPER COMFORTABLE FIT: CoreKnit bands are engineered with a performance knit for enhanced comfort and durability ADJUSTABLE SIZING: Available in sizes S/M and L/XL to ensure the most secure, comfortable fit. You can tighten or loosen the adjustable band easily with Fast Link technology 24/7 DATA CAPTURE: Choose a CoreKnit Bicep Band to free up your wrist without losing a second of data. The Bicep Band is a suitable option if you want to wear a watch, bracelet, or just minimize distractions ULTIMATE VERSATILITY: The Bicep Band offers a versatile fit for workouts, daily wear, and specialized tasks for athletes, professionals, and anyone wanting a secure, wrist-free tracking option COMPATIBILITY WITH WHOOP LIFE: Though Bicep Band is compatible with WHOOP Life, ECG readings must be taken with a wrist-worn accessory FAST LINK TECHNOLOGY: Includes Band, Hook, Clasp, and Fast Link slider that makes swapping bands easier than ever for quick transitions between activities DEVICE COMPATIBILITY: Only compatible with WHOOP One, WHOOP Peak, and WHOOP Life devices. Not compatible with WHOOP 4.0 version