Contains three pairs of firefly devices (does not include recommended Knee Straps). Redefine your pre- and post-workout recovery with the athletic recovery device used by pro and college athletes, elite runners and weekend warriors that provide a 3X faster full body recovery so that you can train harder. Each firefly device delivers 6-12 recovery treatments (suggested recovery time of 2-4 hours based on training intensity). Firefly Recovery devices work best with knee straps (not included). Recover anywhere, anytime with these portable, reusable, easy to use devices. Sold as a pack of three.