These boardshorts are super easy to use. Just put them on like any regular shorts and you're ready to hit the beach or the surf. When you're in the water, the water - repellent coating will keep you feeling dry and comfortable. For the best results, rinse them with fresh water after each use, especially if you've been in saltwater. This helps to prevent any damage from the salt. When it comes to washing, use a gentle cycle in cold water. Avoid using harsh detergents as they can damage the fabric and the water - repellent coating. Hang them to dry in a shaded area to maintain their color and shape. And remember, the elastic waist is there for your comfort, so don't over - stretch it.