Kraft paper Chinese takeout boxes, classically known as oyster pails, feature a brilliant, single-piece folding design that allows them to be completely unfolded into a flat dinner plate or tray once the built-in metal wire handle is unhooked. Unfolding Plate Mechanism: By unbending and removing the steel wire handle from the side tabs, the interlocking top flaps and gusseted side walls open completely flat. This transforms the box into a convenient, makeshift plate perfect for casual or outdoor dining. Leak and Grease Resistance: Modern kraft boxes are treated with food-safe internal coatings to prevent sauces, grease, or liquids from seeping through the raw paperboard The 26oz size serves as the industry standard "quart" or large single-portion size, typically accommodating large entries of noodles, rice, or sides.