EFS Electrolyte Drink Size:30 Serving Chamois Butt’r isn’t just for

Chamois Butt’r isn’t just for cyclists

Stretch Overflow Pocket: Quickly stash or shed an extra layer

CamelBak Big Bite Valve

and rim strips

The open design similar to our X-DOME™ cassette aids in mud clearance

EFS Electrolyte Drink Size:30 Serving Chamois Butt’r isn’t just forFirst Endurance Energizing Electrolyte Mix An isotonic formula that supports physical and mental performance, efficient energy production, industry leading cramp prevention, and reduced GI distress. First Endurance has spared no expense upgrading the EFS drink mix, investing in the latest research driven innovation and technology. The new isotonic formula delivers complete nutrition that supports physical and mental performance, redefining the limits