These boxer briefs are easy to wear. Just put them on like you would with any other underwear. When it comes to choosing the right size, make sure to check the size chart carefully as different suppliers may have different sizing. For swimming, they're a great option as the nylon - spandex blend is durable in water. After use, machine - wash them in cold water with mild detergent. Avoid using bleach as it can damage the fabric and the printed flags. Hang them to dry to maintain their shape. Don't iron directly on the printed part to prevent the print from fading. With proper care, these boxer briefs will last you a long time and keep you comfortable during sports activities.