Multi-compartment bottle system

A bottle system comprising:

• a primary vessel having a top and a bottom, the bottom opposite the top, the primary vessel defining a first sealable volume configured to store a first liquid;
• a secondary vessel defining a second sealable volume configured to store a second liquid, wherein the secondary vessel is removably attachable to the primary vessel at the top thereof;
• a plurality of fitting configured to selectively seal each of the first and second sealable volumes;
• and
• a third vessel configured to be removably attached to at least one of the top and bottom of the primary vessel therewith defining a third volume;
• wherein the secondary vessel includes a skirt that fully encloses one of the plurality of fittings and provides a flat footprint allowing the secondary vessel to remain upright when detached;
• and
• wherein the secondary vessel further comprises at least two separately sealable sub-volumes, each having a differently colored interior and a respective opening facing in a different direction.