To use these men's T-shirts and premium T-shirts, simply put them on and enjoy their comfort. When it comes to washing, remember to machine wash them cold and turn them inside out. Wash them with similar colors to prevent color bleeding. Only use non - chlorine bleach if necessary. After washing, hanging them to dry is the best way to keep them in good shape, but you can also use a tumble dryer on a cool or low - heat setting. Avoid using fabric softener as it may fade the colors. And don't iron or dry clean these shirts to maintain their quality.