Sport Nylon Loop Compatible with Whoop 4.0 Bicep Band, Adjustable Fitness Armband with Bumper Case for Whoop 4.0 – Not Compatible with 5.0

• Compatible Model: Sport Nylon Bicep Band is specifically designed for the WHOO 4.0 tracker (Not compatible with Whoop 5.0/MG), ensuring a perfect fit and providing a stable and comfortable wearing experience
• Super Comfortable Fit : Made of performance nylon for enhanced comfort and durability. Whether you're at the office, hitting the gym, or exploring the great outdoors, this band will effortlessly complement
• 24/7 Data Capture: Choose MAKCPOIMER Bicep Band to release up your wrist without losing a second of data. The upper arm strap is a great option if you want to wear a watch, bracelet, or just minimize distractions. Featuring precise cutouts for unobstructed access to all controls and sensors. Charge your Whoop 4.0 tracker directly without removal
• Ultimate Versatility: The Fitness Armband offers a versatile fit for workouts, daily wear, and specialized tasks—ideal for athletes, professionals, and anyone wanting a secure, wrist-free tracking option