The HEAT series from Porter-Yoshida & Co. combines highly durable modern materials with military functionality to create a range of bags that are rugged, practical, and stylish. The main material used in their construction is a Japanese varistor nylon, woven from heavyweight 6.6 nylon thread — similar to that used for car airbags and bulletproof vests. The high-strength canvas, which provides excellent heat, abrasion, and tear resistance, is then paired with an industrial-grade tarpaulin for durability and water resistance in areas of the bag where it’s needed most.

This heavy-duty backpack offers multiple storage compartments for organising your everyday essentials, with its generous main compartment secured with a two-way zipper. Other key details include a padded rear panel and shoulder straps — all mesh-lined to improve breathability — and a military-inspired six-section Pouch Attachment Ladder System (PALS) for attaching small items such as keychains and carabiners.

To enhance the package, each HEAT series bag is also supplied with a Porter engraved mini Maglite torch, complete with battery and storage case.