The #RUTHLESS Shaker Bottlle SportShaker uses patented ProBlend Technology har- nessing the power of kinetic energy. Studies show that kinetic based mixing elements that blend against the flow of material provide a more effective and smoother blend then shakers with free moving mixing elements that only flow with the material. 100% proudly made in the USA! We only use the absolute best USA grade material. 

• 100% proudly made in the USA!
• PRO BLEND TECHNOLOGY- Studies show that kinetic based mixing elements that blend against the flow of material provide a more effective and smoother blend
• 100% LEAK PROOF- Twist-on top ensures a tight, leak-resistant seal
• BPA and BSA Free
• 27-ounce capacity
• DISHWASHER SAFE (Top rack only)