The new and improved Elasta-Max Briefs from InfinityXL are built to hold even the biggest booties with the ability to stretch up to 25x their base size while remaining stylish and comfortable to wear. And, for a limited time, each 6-pack of Elasta-Max briefs comes with a certificate guaranteeing that if you outgrow your pair of undies, we will give you a free replacement pack upgraded to fit your new size.