Old School Labs, 40 years in the making, formulated in California, and Made in the USA. Ultra-pure and clean supplements for physique perfection or life-changing transformations. From pre-workouts, multivitamins, protein, to amino acids, greens, and thermogenic fat burners, we have the right supplement and nutritional solution for you. We’re here to answer your questions via social media or email so that you can achieve your goals the Old School way. #oldschoollabs #teamosl #iamoldschool. Guaranteed Results or Your Money Back: Old School Labs firmly stands by the quality, effectiveness, and commitment to no proprietary blends as a brand standard. If, for whatever reason, you are not 100% satisfied with any Old School Labs product that you purchase, we will help you resolve your concern or provide a full refund. Improve Vascularity: When it comes to muscle pumps, Vintage Burst is loaded with ingredients like L-Arginine HCl, patented Spectra , and Vanadyl Sulfate to enhance blood flow. What these ingredients do when combined is drastically improve vascularity. If you want your veins to look like a road map, Vintage Burst can provide you with the necessary tools to help you look freakishly vascular. Heighten Workout Intensity: To maximize your results in the gym, you need to up the intensity. Not only do the vasodilation ingredients in Vintage Burst promote better performance, but the addition of patented CoffeeBerry Organic Coffee Fruit Extract, Coffea Arabica, and Maca Root Extract help naturally boost energy levels and stamina without causing jitters or side effects that interfere with your workouts. 3-Hour Muscle Pump Enhancer: The advanced formula found in Vintage Burst can allow you to achieve a massive 3-hour pump with just a single dose. When used twice a day, you can sustain a muscle pump for upwards of 6 hours! When you want to look bigger, fuller, and more muscular than ever, Vintage Burst can get you there.