About the product
- Expands the capacity of the blender bottle ProStak Shaker cup to hold large protein, meal replacements, powders, supplements, and more
- Includes 2 extra-large 250cc jars and twist \'n lock pill storage tray
- Unique interlocking jars with individual lids make it possible to carry supplements, snacks, and more, with or without the bottle
- Durable, dishwasher safe, and BPA- and phthalate-free
- Compatible with any blender bottle ProStak Shaker cup system
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