Review on 10L/20L Semi-transparent Waterproof Dry Bag Backpack with Zipper Compartment, Handles, and Straps - Black, Blue, Green, Red - Ideal for Kayaking, Swimming, Beach, and Rafting by Shawn Martin

The perfect bag for any activity. Used it to carry water from the creek to the camp. Didn't drip at all or leaked. Alsoz used it for my sleeping bag and pillow. Sealed perfectly and safely packed very tight. The backpack straps aren't designed for long hikes, but with the right packaging, you can easily carry it for a day hike. The only problem is common to all dry bags. That means they tear at the seams or get punctured. The thickness is not remarkable but I can see it will last many times. Just keep it away from stones and knives or fire.