Improved design. Manufacturing Process Fully injection molded in the USA for a clean, precise final product. Helimix uses an innovative, patented design to ensure every athlete's sports drink blends smoothly. The shape of the cup itself does the mixing and it works much better than you think. Forget the days of cleaning shaker balls, whisks and screens, trying to unravel them from the dishwasher rack, losing them in your cupboards or replacing batteries. The Helimix Tumbler only requires the cup, lid and mix of your choice. We know you've put tons of hard work into every training session, game and competition, so we want to eliminate everything that stands on your path to domination. The Helimix mixing cup is made of shatterproof, odor resistant, 100% BPA/BPS free Tritan plastic to give you a clean, American-made, durable and easy to clean shaker bottle.