bag and yet it sand got into the product. this can cause damage when used because of the moving parts inside.
you are on the beach and someone is playing football nearby. the ball comes your way and one of the players makes a sliding on the ball. sand goes everywhere and also onto your bag.
your product is in your bag. at the end of the beach day you put your towel inside your bag. sand comes lose from the towel and gets into the product. there was sand in your towel. note: sand damage may be caused not only on the beach but wherever you find sand. the woods, playgrounds, 