The premium SuperKnit band is engineered with an ultra-soft backing and microfilament yarn that's comfortable enough to wear non-stop, from sleeping to swimming to showering, and durable enough to withstand daily wear. ENHANCED COMFORT & DURABILITY: Designed for 24/7 wear, the SuperKnit band is made with microfilament yarn that's flexible, comfortable, and durable MULTIPLE COLOR OPTIONS: Customize your WHOOP to match your look and your lifestyle with tons of colors and styles Whether you're headed to the gym, office, happy hour, or home, feel confident with your look FULLY ADJUSTABLE BAND: Designed to fit all sizes, you can tighten or loosen the adjustable band easily ADDITIONAL INFO: WHOOP 4.0 and membership not included Purchase your WHOOP 4.0 and membership separately