To use these T-shirts, simply put them on and enjoy the comfort. When it comes to washing, make sure to turn them inside out and wash with similar colors in cold water. Only use non - chlorine bleach if necessary. After washing, it's best to hang them dry. If you're in a hurry, you can tumble dry on cool or low heat. Don't use fabric softener as it might fade the color. And remember, don't iron or dry clean these shirts to keep them in good condition.