If you're like us you like to keep your gear contained and in one place after a day on the river but you don't like opening up your gear bag to a moist and mildewy mess the next day. That's where the Simms Challenger Mesh 60L Duffel comes in. With a breathable polyester mesh construction and roomy 60-liter capacity this gear-hauler keeps your boots waders outerwear and more contained and aerated at the end of the day.