Stone Island has joined forces once again with Porter, the Japanese brand renowned for its premium travel accessories. The three-piece assortment is made up of a Duffel Bag ($686), Backpack ($839) and Laptop Case ($282), all built with Stone Island's Nylon Metal Black Watro fabrication. The material features a jacquard rip-stop design on the surface, derived from the Stone Island House Check and integrated with the star emblem in the vertical and horizontal checked pattern. Additionally, the interior of the fabric is resin treated to achieve a mild water resistance. Garment dyed in Red, Sage Green, Ice and Black color options, the collection is available now through September 25 exclusively through the Stone Island app.