Why do I need to rinse the new pants in the washing machine 2 or more times before wearing them?

Let us start by addressing the specific count of 2 or more washing machine rinses^[2]. The black color of GOYOWEAR's Primaloft Weather Pants undergoes a special dyeing process when making the fabric^[3].

During this dyeing process, minute amounts of dye remain between the spandex yarns responsible for elasticity^[4]. Generally, in elastic fibers, dark dye easily hovers without coming completely out of the molecular gaps. If you wear them as is without washing out this residual dye, there is a risk that the color may bleed onto light-colored tops or shoes due to sweat or friction generated while walking.

Therefore, instead of a standard wash with detergent, you must run a rinse cycle with clean water 2 or more times to wash away the dye remaining between the fibers^[5]. Rather than wearing them right out after delivery, running the rinse course first is a safe way to wear them that protects other clothing.