The OmniCore Designs Peek-A-Boo Floating Roll Top Dry is an ideal option for the traveler looking for versatility and durability. This bag is made out of a tough waterproof material, giving the bag incredibly high tear strength while being pliable enough that you can access and store it easily. With round bottoms and a watertight seal (you need to roll the top down a few times and snap the side buckles together), no water is getting into 1 of these bags. The best part about this dry bag is that all sizes have a Peek-A-Boo front window where you can stash belongings you need easy access to. The bags come in various sizes: 10 l, 20 l, 30 l and 40 l and come with single shoulder strap design, easy to carry on your shoulder. For those ultra-adventurers, opt for the 4-Pack of bags and save. OmniCore Designs Peak-A-Boo Floating Rolltop Waterproof Dry Bag (40 l).