Abstract: A hot pizza box is formed of corrugated cardboard and includes an aluminum liner for the top, bottom, front, back and side panels to help retain heat within the box. A second aluminum liner may be located within the corrugated material of the box either above or below the corrugated material in the box panels. An alternative pizza box is formed of resilient material having interior and exterior members enclosing a cavity. A formed aluminum panel is located in the cavity. The bottom panel of the box has a central aperture penetrating the interior member. The aluminum panel has an opening formed to align with the aperture and a series of channels extends from the opening to edges of the panels. The aperture serves to channel heat from the pizza to the opening in the bottom panel and through the channels to the panels and tabs of the pizza box.

Abstract: A helmet for use by riders of bicycles, motorcycles or other vehicles. Left and right hearing assemblies are mounted inside of the helmet. Each of the assemblies has an enclosed ear cup positioned to fit snugly over a respective one of the user's ears. Respective hearing conduits extend from the ear cups through the interior of the helmet to respective openings. Thereby while the ear cups block substantial wind noises, the hearing conduits direct desirable sounds, such as emergency sirens, other traffic noises and voices, to the user's ears. User operable actuators for closing and opening the hearing conduits as desired can be provided. Optional ventilation tubes direct cooling and drying air through openings in the ear cups to the user's ears. Gates or shutters supported by the helmet shell allow the user to open and dose the ventilation tubes as desired.