BlenderBottle ProStak Expansion Pak, Navy, 100 + 150 + 250 ml

The ProStak Expansion Pak is an add-on set for the BlenderBottle ProStak system, here in navy. It has three jars (100, 150 and 250 ml), each with its own lid, and a small pill tray that locks into a jar lid, so you can carry tablets and powder in the same jar. The jars lock onto each other and onto the base of a ProStak bottle with a quarter-turn Twist n' Lock mechanism, and you can also carry them separately. Use them for protein powder, supplements, snacks or chopped fruit. BlenderBottle says the set is free of BPA and phthalates. The shaker itself is not included.