Made from EVA, this is an extremely lightweight and durable large capacity bag. Made of waterproof material with welded seams to ensure that the equipment you place inside stays tried. EVA is the ideal material for making saltwater luggage, it is resistant, easy to clean and does not rot like some fabrics can over time. The clear lid has a quality, sturdy two-way zipper that runs through most of the bag, allowing you to open fully so you can see the entire contents of the bag with ease. It also fits over a lip at the bottom, so when compressed, water can't seep into the main compartment. It's a semi-rigid design, so it won't collapse on itself when it's not fully loaded. Designed to fit four Tronixpro EVA boxes inside for a custom storage solution to ensure all your gear is fully organized and easily accessible in one sitting, as well as protected from the elements. It comes with a good quality carrying strap that can be pulled over the shoulders for easy portability.