The all-new HydroKnit band is our fastest-drying, most advanced fabrication yet. It dries twice as fast as SuperKnit and retains 30% less water – making it a must-have for water sports, high-sweat activities, or just taking a shower. The performance-ready, water-resistant band comes in four colors: Riptide, Night Swim, Tidal, and Wipeout.

A portion of the proceeds from HydroKnit band purchases go toward the Michael Phelps Foundation (MPF) to promote water safety. Since its founding in 2008, MPF has provided critical, life-saving programming to more than 350,000 people worldwide.

Includes Band, Hook, Clasp, and Fast Link™ slider that makes swapping bands easier than ever. Only compatible with WHOOP® 4.0.