The Cotopaxi Allpa 42L Travel Pack is a travel backpack for all the best adventures. Packing is easy when your pack opens suitcase-style and features two internal mesh compartments. Undies here, clothing there, and laptop and tablet into the exterior-accessed padded sleeves at the back. Of course there is a small item essentials pocket and water bottle pocket, and an included rain cover shields when the weather changes. Not carry-on compatible, but once you arrive, there are three options for carry: backpack straps, grab handles, or shoulder strap.