Outlier's Ultrahigh Big Box Bag is simply the only tote you'll ever need. It's made from their favorite bag material, Dyneema, which is said to be the world's strongest fiber. The complex structure of the material allows for it to be waterproof, lightweight, durable, and abrasion resistant. It's also incredibly compact. It folds into a little square so you can keep it in a larger bag for when you need it.