Update your closet today with ASOS. Shop all the latest designer underwear in our selection. Available in a wide range of colors and styles, these underwear are built to last from materials such as denim. Everything by ASOS will seamlessly integrate into your existing wardrobe. If there's any brand who can make seasonless, wear-forever underwear, it's ASOS. Your denim underwear will become more beautiful with time as long you take special care when maintaining them. Everyday care will go a long way in maintaining your denim underwear, and we recommend checking the care label inside your garment before attempting to clean. Washing inside out in cold water with a mild detergent is advised. However, we would always recommend following the specific instructions on the care label that is stitched into every garment. Avoid putting in the tumble dryer as this can degrade, shrink and even fade the fabric over time. Hang by the back belt loop to store, instead of hanging over a hanger which can stretch the fabric awkwardly. Discover our huge selection of the brand’s briefs to find your perfect look.