💪 Elevate Your Fitness Game with Style! Experience a snug fit with no gaps, ensuring your Fitbit stays secure during any activity. No tools required! Simply install and remove with ease for a hassle-free experience. Featuring a notch and extra loop for a secure fit, this band is designed for your active lifestyle. Choose between Small (5.5" - 7.1") and Large (7.1" - 8.7") for the perfect fit. Crafted from high-quality elastomer, this band is sweat and water-resistant for ultimate comfort. Waterproof Adjustable Sizes Sporty Design These waterproof replacement bands for Fitbit Charge 3 and Charge 4 are designed for both men and women, offering adjustable sizes, a secure fit, and premium materials for a comfortable, sporty experience.