The extra fabric will be used to test detergents
Do you know how when you buy new clothes, they always come with an extra piece of fabric? We all assumed it was for repairing rips and tears, right? Wrong!
Those extra pieces of cloth are given so you can evaluate the fabric’s colorfastness when it comes time to wash it. What a brilliant idea! When switching washing detergents or trying out a new stain remover, it’s recommended to save those fabric pieces. So, rather than spoiling your new clothes, you can just test the fabric to see how it will turn out before washing it.
You’d never think a pen lid could save a life, would you?