The Cargo Case "Kodiak" uses HEAT PACKS to keep tapes stock, batteries and other essentials operating properly. It is Mylar-lined and insulated with a high-loft poly-fil for superior heat retention. Includes 4 air-activated heat packs. It has three large outside pockets, multiple slip pockets and has a wide double zippered top cover, for easy access to the interior. These cases have a rigid frame and dividers to protect and organize equipment; (mini-dv cameras, batteries, lights). They come with the distinctive Porta-Brace leather SHOULDER STRAP and matching handles .