To use these Endura men's liner shorts, simply put them on like regular shorts. They're designed to be worn under your Endura shorts, and thanks to Clickfast compatibility, they'll stay in place. When it comes to maintenance, you can machine - wash them in cold water with a mild detergent. Avoid using bleach as it can damage the fabric and the special features of the pad. Hang them to dry instead of using a dryer to maintain their shape and performance. Also, check the leg grippers and waistband regularly to make sure they're still in good condition. If you notice any signs of wear, it might be time to replace the shorts for the best comfort.