Optimum Nutrition Gold Standard Pre-WorkoutOne 300 g container (30 servings) of Optimum Nutrition Gold Standard Pre Workout Powder This pre workout powder helps support performance, energy and focus when taken consistently over time with regular resistance exercise Each serving of pre workout powder has 175 mg of caffeine Feel good about your pre workout drink mix Mixes easily with a shaker cup, perfect for packing in your gym bag as part of your training routine