WHOOP CoreKnit Wristband – Compatible with One and Peak – Performance Knit – Not Compatible with Gen 4

WHOOP CoreKnit Wristband – Compatible 5.0 One and Peak – Comfortable, Versatile, Performance Knit Fitness Accessory for 24/7 Activity – Not Compatible with Gen 4 – Jet Black

WHOOP 5.0/MG SportFlex – ECG Compatible, Waterproof, Sweatproof, Silicone Accessory for Health & Fitness Wearable - Not Compatible with Gen 4