Boston bag made of AI+ 18oz indigo denim. The fabric is a special 18oz denim that  has been rope dyed using a very special method with a mixture of indigo dye and natural indigo. For the warp, we've employed our own original hard-twisted uneven yarn, and for the weft went with a special uneven yarn that is a mixture of our organic Japanese"Samurai cotton" grown in Japan. This Japanese cotton, characterized by its short fibers, gives the denim a rough and neppy look and feel, while the texture and indigo dye offer a rich and beautiful shade of blue that couldn't be realized with indigo alone. The synergy of fabric and dye make this material next level.