A garment made from a nylon/spandex mix with a top coating is best stored hanging on a hanger that doesn’t leave marks. Instead of washing after each use try to air the garment by hanging it in the window or on a balcony to rid of unwanted smell. This will make the shininess of the garment last longer.
When washing, gently wash the garment by hand inside out in lukewarm water and hang dry. Do not use softener or a detergent containing chlorine as this might cause damage to the top coating.
Do not tumble dry, iron or dry clean.