The containers are typically made from glass or plastic. Listings commonly state either "Container Material: Glass" or "Container Material: Plastic."
Lid materials shown include wood, polypropylene (a type of plastic), glass, and other plastic options.
Capacities vary widely. Reported sizes include 22 oz, 24 oz, 38 fl oz (US), 47 oz, 48 fl oz (US), 75 oz, 105 fl oz (US), and 138 oz.
Review summaries commonly report that many jars and containers keep items fresh; many have airtight or snapping lids. A smaller number of reviews note lids that lack a gasket or are not fully airtight under impact.
Many single canisters are sold as one-piece items. At least one meal-prep set is listed as ten pieces; its description also notes five 3-cup containers with matching lids.
