a quick erecting , disposable cooler which is transformable from a flat blank of corrugated sheet material may be non - destructively “ knocked down ” or collapsed after being semi - erected . the deployed cooler is moisture - proof and lacks leak paths , so it reliably stores and transports melting ice and beverage containers . a generally rectangular center panel is integrally bordered by pairs of end panels and side panels . each side panel supports a foldable top panel with special knockouts and tabs to facilitate subsequent coupling of the panels . each end panel has a small flap at its outer edge facilitating coupling . four , integral , diametrically spaced - apart corner panels interconnect the center panel with the end and side panels . score lines defined between the orthogonally arranged panels facilitate folding . corner panels include diagonal score lines . the center panel forms a cooler bottom , and the end and side panels respectively form carton ends and sides when foldably deployed .