Porter Tanker Daypack - PORTER Daypack from the TANKER series. Inspired by MA-1 Flight Jacket and made with insulated 3 layers (Nylon Twill, Polyester Cotton, Nylon Taffeta) which is called flight satin. The rescue orange lining contrasted to the exterior basic color is accent of the design.The light and durable bag of bonded soft fabric is eternal standard for daily use.