SERIOUS STORAGE
Expand the capacity of your BlenderBottle® ProStak® system. Extra 100cc and 150cc jars double the initial capacity of your system, while the massive 250cc jar offers ample room for even the largest protein, meal replacement, and on-the-go nutrition needs.

STAY SECURE
Built to take a beating, the Expansion Pak jars keep contents in place and your gym bag clean.

TWIST N’ LOCK TECHNOLOGY
Inspired by the GoStak® container system, Expansion Pak jars can be connected to each other with a quick twist for added portability.

GO BIG
The massive 250cc jar makes room for even the largest nutritional supplements, chopped fruits, and more.