This is the Tom Bihn large Mystery Grab Bag in black XPac and Aubergine ballistic nylon. From the Tom Bihn website: “The Mystery Grab Bag is a versatile organizer made up of rare, retired, or unreleased fabrics and colors. Rather than letting these HTF (hard-to-find) fabrics go to waste, we transform them into side panels for these bags, making every Grab Bag truly one-of-a-kind. It fits easily inside a larger bag or transforms into a mini shoulder bag with the addition of an optional strap attached to its D-rings. Available in two sizes, the Mystery Grab Bag is ready for whatever you throw its way.” 2.5 Liters 9.4" (w) x 5.3" (h) x 4.1" (d) / 240 (w) x 135 (h) x 105 mm (d) Compact men's carry bag in black and dark purple. Durable fabric with sturdy handles and a secure top zipper. Simple, versatile design for everyday use. Lightweight and easy to carry.