The Patagonia Black Hole Wheeled Duffel Bag 40L is a burly, legal airline carry-on duffel. Tough and highly weather-resistant, this durable bag protects your gear from the scuffs and scrapes of wayward journeys. Its zippered U-shaped lid—with two zippered internal mesh pockets on the underside to keep small items organized—offers quick and easy access to the main compartment. A zippered exterior pocket provides a secure and handy spot for your boarding pass, energy bar or paperback. The sturdy frame sheet protects the duffel from baggage-handler abuse and keeps your Black Hole® upright, even when it's loaded to the max. Oversized wheels deliver a smooth ride, whether you're crossing the tarmac or traversing a cobblestone street. Carrying options include the main webbing handles (with snap closure), a two-position telescoping handle and the two haul loops on either end. You can lash additional gear to the outside with the four corner-mounted daisy chains.