QUICKSTART 4 LITER RACE PACK Heart Rate Monitors Track your body’s energy levels

Track your body’s energy levels so you can find the best times for activity and rest

Made to fit comfortably inside any shoe

These metrics are available with the addition of a compatible heart rate strap² or the compact Running Dynamics Pod

Barely-there

Zippered pocket for small storage such as cash

QUICKSTART 4 LITER RACE PACK Heart Rate Monitors Track your body’s energy levelsThis 1. 5 L hydration bladder pack provides a low profile, minimalist way to comfortably wear your water and bring along other essential items on your journey. 1. 5 L Hydration Bladder Included Front Storage for nutrition and phone fits most large format smartphones Main back zippered pocket for extra layers and other running essentials Adjustable front and side straps for dialing in a perfect fit Soft perimeter binding prevents chafing Specs Weight