The «Tanker» series, which was announced in 1983 and is a key series with Porter. It uses an original 3-layer structure fabric of the US Air Force flight jacket MA-1. The 3-layer fabric of nylon twill (surface) + polyester cotton (middle layer) + nylon taffeta (back) is very light. The inside of the bag is in vivid rescue orange. The Helmet bag can store documents up to A3 paper size.

• Size: 48 cm x 35 cm
• Two large outside pockets
  
• Flat and large main compartment with removable clear pocket
• Made in Japan