Transform your smoothie game with our cutting-edge FUELD SportShaker blender bottle. Our patented ProBlend Technology harnesses the power of kinetic energy for a smoother blend than shakers with free floating elements. In fact, scientific studies have shown that our kinetic-based mixing elements lead to improved performance by blending against the material flow. Plus, you can trust in our commitment to quality as all of our products are crafted from the finest USA-grade material and are proudly 100% manufactured in the USA. Not to mention, our products are FDA approved for your safety and peace of mind.