Using these men's shirts from The Knowledge Evolution is easy. Just put them on and enjoy their comfort! When it comes to washing, remember to use cold water and turn the shirts inside out. Wash them with similar colors to prevent color bleeding. Only use non - chlorine bleach if there are tough stains. After washing, you can either hang them to dry for the best results or use a tumble dryer on a cool or low - heat setting. Be careful not to use fabric softener as it can fade the colors. And don't try to iron or dry clean these shirts, as it may damage the fabric.