Bring firework energy to every rep with summer's most explosive collab. Packed with 200mg of caffeine, fatigue-fighting muscular endurance, and critical electrolytes for elite hydration, C4 Sport x Black Cat® redefines high performance for athletes at every level*^. Available for a limited time only. KEY FEATURES EXPLOSIVE ENERGY: Power hard-hitting training sessions with 200mg caffeine*. MUSCULAR ENDURANCE: Combat muscular fatigue with clinically studied CarnoSyn® Beta-Alanine^*. ELITE HYDRATION: Replenish key minerals and critical electrolytes lost during tough training*. NSF CERTIFIED FOR SPORT®: Delicious berry flavor with ZERO sugar or artificial colors. EXPLOSIVE FLAVOR: Bursts of strawberry and blueberry that taste like summer. C4: Backed by 20 years of sports nutrition expertise, we’ve raised the bar with an innovative selection of supplements. ^Studies have shown benefits of CarnoSyn® Beta-Alanine to be correlated with cumulative use. Black Cat® is a registered trademark of Li & Fung Limited, used under license.