elasticized waistband elasticized leg openings sits at belly button fitted xs = sizes 0-2 s = sizes 4-6 m = sizes 8-10 l = sizes 12-14 xl= sizes 16-18 models are approx. 59 and wear sizes s (4), l (12), and xl (18)machine wash according to the care instruction label . Best Holiday gift for Women , perfect Briefs for Christmas!