Achieve better performance and faster recovery with improved whole-body circulation. Used by Olympians, weekend warriors, and over 700 professional and collegiate teams, Firefly is a revolutionary new way to enhance recovery by increasing full-body blood flow. Unlike traditional recovery devices, Firefly doesn't tie you down with wires and bulky equipment. It's designed to fit into your active lifestyle.  How It Works: Firefly delivers electrical pulses to stimulate the peroneal nerve in your leg, triggering muscle contractions that boost blood flow. This enhanced circulation helps reduce muscle soreness and get you back to your active routine quicker. What's Included: The Travel Packs are designed to keep you moving comfortably, wherever your adventures take you—all at the best value. Explorer Pack: Includes 2 Firefly devices and 2 accessory straps. Adventurer Pack: Includes 4 Firefly devices and 2 accessory straps. Globetrotter Pack: Includes 6 Firefly devices and 4 accessory straps. Details: Each Firefly device delivers 30 hours of recovery treatment (suggested recovery time of 1-4 hours based on training intensity). Most users prefer to use Firefly with accessory straps. The accessory straps help to keep Firefly in the optimal position for maximum benefit. The battery is not replaceable / rechargeable. Why use Firefly: Reach peak performance Recover faster, get back to training Save time, recover on the go Increase whole body circulation Travel better, arrive fresh