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  • In an effort to ensure that our customers receive only top quality and authentic products, we carry stringent quality checks from the time when the products enter our warehouse till the time the products get packed and shipped to you. At Sixteen Inches, we strive to provide 100% authentic products to our customers by maintaining tight quality control during sourcing and distribution of supplements. We also offer 14-day return policy to our customers, in case you are not satisfied with the product quality.
    We invest an enormous amount of time and effort to ensure we source products directly from the brands or their authorized importers. The chances of fake products increase as one moves towards resellers.
    A shocking new study has found many supplements on the market are fake, with researchers determining more than one-third of 44 products tested don’t contain what’s on the label. But one of the nation’s top holistic doctors notes most supplements do not pose a risk and that there are steps consumers can take to protect themselves from bogus products.

  • While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product.

    For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition.

    Any reviews or comments on any products are the personal opinions of the users of the products itself and are not evaluated by the manufacturers or Sixteeninches, whatsoever. Results may vary from person to person and are not guaranteed in any case. Sixteeninches.com assumes no liability for inaccuracies or misstatements about products.

  • Pre-workout energy optimized for exercise

    You’re dedicated to giving everything you’ve got when you train, but every athlete at every level has one thing in common: the desire to start off strong. Whether you’re a swimmer, a lifter, or just enjoy a daily jog, taking a pre-workout like C4 Sport can help give you the energy you need to get through even the toughest moments of your fitness journey from before “go” to long after you’ve left the track or taken off your gear.

    Better energy, better performance, better training

    Taking a pre-workout can help you get started and train longer and harder than before. C4 Sport is pre-workout energy optimized for exercise. It combines two formulations to support performance and energy into one, so every base of your workout is covered. The performance side includes creatine monohydrate for muscle endurance, Arginine AKG to increase blood flow and keep you going, and Beta Alanine to help keep fatigue at bay. The energy side contains an explosive blend of caffeine and taurine for unrivaled focus and energy.

    NSF-Certified For Sport

    Training hard and taking care of yourself is important to you, and it’s important to us that you’re taken care of. We want to be your trusted partner on your fitness journey, which is why we’ve designed our formulations to help you get the most out of your workout, and make them in mind-blowing flavors that you’ll crave. With C4 Sport we’ve gone the extra mile and obtained NSF Certified for Sport® certification which is important for pro-athletes and everyday athletes alike. Certified for Sport® is the only independent third-party certification program recognized by MLB, the MLB Players Association, the NHL and the CFL. The MLB, NHL and CFL clubs are permitted to only provide and recommend products that are Certified for Sport®, and players are urged to only use these products. The certification is also recommended by the NFL, PGA, and LPGA. With the C4 Sport line you can be sure that what you’re putting into your body has held up to rigorous testing scrutiny and safety standards so you can get out there and only worry about beating that next goal.