-Shaker Bottle. -Stainless Steel is always preferred instead of Plastic. -Ideal for mixing your Protein Shakes.
-Plastic Shaker Bottle. -Generally cheaper than Stainless Steel. -Be sure to only use BPA-Free bottles (should also be free of Phthalates, BPS, and Tritan).
-Be sure to never put any plastic in the dishwasher (even on the top rack) due to the leaching of toxic hormone-disrupting chemicals. -Use a convenient Bottle Brush to hand-wash Plastic Shaker Bottles.