To use these Marabelle shorts, simply put them on like you would any other pair of shorts. They're great for pilates or just going for a walk on the weekend. When it comes to sizing, remember to size up because of the compression fabric. For maintenance, you can follow normal washing instructions for nylon - spandex blends. Wash them in cold water and hang them to dry to keep them in good shape. Avoid using harsh detergents that could damage the fabric.