Clif Shot Bloks are the latest nutrition option for endurance athletes. Bloks come in chewable, 33 calorie cubes, making it easy to customise and track caloric and electrolyte intake during long outings and races.No pits. Just carbs and 50 mg of caffeine per serving. Simple-to-Handle Easy-to-Chew What are CLIF SHOT® BLOKS™? - Energy Chews are semi-solid, easy-to-chew sources of carbohydrates—your body's preferred source of fuel during activity.Who needs them? - primarily used by performance athletes – cyclists, runners, mountain bikers, triathletes, adventure racers, etc. However, any performance-oriented athlete needing a quick burst of energy can benefit from CLIF SHOT BLOKS.When should they be eaten? -Half a packet can be eaten 15 minutes prior to activity to increase blood sugar levels, followed by 1-2 packets per hour during activity. Consumption should always be followed with a mouthful of water.