Trust us, if there is a carry goods franchise from any brand in the world you can trust it's Patagonia's Black Hole series.
The baby of the duffel range is the 40L. Tough and highly weather-resistant, it keeps your gear protected and easily accessible. The main compartment opens via a zippered U-shaped lid, which has a pair of zip-closing mesh pockets on the underside for easily lost items like your lottery ticket. A zippered exterior pocket holds all the stuff you need quickly. The padded bottom panel adds structure and helps cushion the load when your duffel gets the baggage-handler treatment. Carrying options include padded, removable shoulder straps for a backpack carry, webbing handles with a snap closure, and haul loops at either end for linking multiple bags. Daisy chains let you lash additional gear to the outside.