Yes. Single-serve bottles are described as highly portable and are sold in multi-packs to make packing drinks for lunches and other on-the-go uses easier.
The gallon-sized option is listed as containing 16 servings.
Common multipack quantities shown are 18-count and 24-count packs of 6.75 fl oz single-serve bottles.
The gallon listing specifies the beverage container material as plastic and describes it as a plastic gallon bottle.
Product details advise refrigeration: the gallon description says to keep the drink refrigerated after purchase, and single-serve bottles should be refrigerated after opening.