You always need to keep something dry when you at the beach or out on the water.Dry Boxes are great if you have the room, but are bulky and can get in the way. Aqua Dry-Bags are made from heavy duty puncture resistant clear plastic material this dry bag makes it easy to see what you want from the bag and protects what is in the bag from the environment. Bag has Velcro Closure for positive seal. Best of all it folds up small and compact when you don't need it so you can take it anywhere.