The Pure Blue dry bags are great on the boat, bike, paddle board, or any activity. The water proof bag can be tossed in the water and will keep your belongings dry or you can throw a soaking wetsuit in it to keep your car dry! It keeps water in or out depending on your preference. The Pure Blue dry bag makes for a trusty travel companion plus you can feel good about the purchase too! $5 of every purchase is being donated to the Shark Allies. Their team is dedicated to taking action to save sharks!