TUOY Men's Breathable Underwear Sexy Swim Briefs Trunks Sports Boxer Swimsuit with Belt Waist 85% Nylon and 15% Spandex, Cotton in lining Perfect belt waist design offering flexible wear during your everyday life, never worry about the too-large size Elastic waist band for extra comfort and support, designed for long lasting comfort and performance Machine wash or hand wash in cool water for easy care, DO NOT bleach, tumble or dry low Order one size up is recommended, because the China size tends to be smaller than the US size, please refer carefully to the size chart. Fashion color matching ensure charming look Comfy and naturally sexy in silky-soft Stretchy elastic at waist and legs Flexible fastener designed for adjusting the waist fit Breathable material with no-water absorbing Machine washable Do not bleach, tumble or dry low. Dry-clean and spin-dry is not allowed. Detergents are not needed to thoroughly clean the product.<br> Mild color fading may happen after swim in the sea because sea water can somehow be bad tothe spandex. But the color will matain the same.