Team RXMuscle ran into the MetalShake team at the Arnold Classic, and, we might have been introduced to the most innovative shaker cups on the market.
MetalShake offers cutting edge features including a unique cooling compartment (that keeps drinks cold for 4-6 hours), metal make-up that prevents the cup from 'smelling' after usage, and a toxin-free inner-lining.
Check out MetalShake.com.
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