- COMFORTABLE & SKIN-FRIENDLY: Our Silicone Loop Band for WHOOP 4.0/5.0 features a soft-touch design made from non-irritating, odorless material, providing all-day comfort for your active lifestyle. (This silicone wristband does not interfere with charging and does not need to be removed) - WATERPROOF & SWEATPROOF: Whether you're hitting the gym, going for a swim, or running in the rain, this band is completely waterproof and sweatproof, allowing you to focus on your performance without worry. - SECURE & DURABLE: The innovative loop back studded buckle ensures a snug and secure fit, so you can wear your band for WHOOP 4.0 band confidently during intense workouts or competitive swimming sessions. - LIGHTWEIGHT & ADJUSTABLE: Designed for versatility, the lightweight construction makes it easy to wear, while the adjustable size accommodates various wrist sizes comfortably. (4.9 inch~8.9 inch/ 12.5 cm~22.5 cm). - MULTIPLE COLORS AVAILABLE: Choose from a variety of vibrant colors to personalize your fitness tracker, ensuring you look great while tracking your performance with the replacement band. Yeahxing Silicone Loop Band for WHOOP 4.0 - Sports Wristband Compatible with Whoop 5.0 Straps - Soft-Touch, Waterproof and Sweatproof, Easy to Use and Adjustable, for Wrist Size 4.9 Inch~8.9 Inch