WHOOP CoreKnit Wristband Compatible with One and Peak Performance Knit Not Gen 4, Jet Black

DESIGNED FOR ULTIMATE COMFORT – CoreKnit is designed to be lightweight and flexible for all-day comfort. PERFORMANCE KNIT – CoreKnit is made with our performance-ready knit, so that you can take on any workout or activity. SWITCH UP YOUR STYLE – CoreKnit is available in a range of colors, so you can match your band to your personal style–made easy with Fast Link technology. FULLY ADJUSTABLE – With a completely adjustable band, you can easily tighten or loosen CoreKnit to find your perfect fit. COMPATIBILITY – This is not compatible with the WHOOP 4.0