These bikini panties are made with a SOFT, AND BREATHABLE COTTON material that is COMFORTABLE FOR EVERYDAY WEAR. They feature a SEXY mesh accent detail and provide FULL BACK COVERAGE for any range of activity. Available in a bundle pack of assorted colors. General sizing guide corresponding to US pant size: Small (0-2), Medium (4-6), Large (8-10), X-Large (12-14). Made of 92% Cotton and 8% Spandex. Machine wash in lingerie laundry bag, line dry. For better results, hand wash.