To wear these men's cotton shorts, simply put them on like any other pair of shorts. They're great for casual outings or sports activities. When it comes to sizing, remember that Asian sizes are smaller, so choose a larger size if you're in between. Always check the size chart before buying. For maintenance, you can machine - wash them in cold water. Avoid using bleach to keep the color and fabric in good condition. And don't worry too much about the slight color difference from the photos, it's normal due to different computer screens.