Tortuga Setout Divide Backpack - dimensions: 20 in x 13 in x 6 in (50.8 x 33 x 15.2 cm) - expands from 26L to 34 L - includes a hip belt for comfort that can be detached if needed - fits a 15" laptop - comes with a long strap that can transform the bag into a duffel-bag style This has only been used twice, so it's in excellent condition. Selling because I prefer to use a roller carryon, but this is a great backpack with tons of storage and customization!