These hiphugger panties are made with a soft, breathable cotton fabric to retain the fit and shape after every wash. They provide full back coverage for everyday wear. Available in a value pack bundle of assorted colors. General sizing guide corresponding to US pants size: Small (0-2), Medium (4-6), Large (8-10), X-Large (12-14) 2XL (14-16), 3XL (16-18). Made of 92% Cotton and 8% Spandex. Machine wash in lingerie laundry bag, line dry. For better results, hand wash.