The Apeks changing mat is great for shore/beach diving. After you are done using the mat, there are 2 orange bungee like cords on the sides that you can tighten and it will form a bag like duffel, keeping all your sandy/used items inside until you get home to wash it all. Stops the spread of sand/dirt in your car. There are also handles on the outside so you may carry it once it has been tightened into a bag.