Stretchable material around the waist that helps to hold in the stomach and love handles. Elasticated top edge keeps the briefs in place just below your bra. Detail on the briefs in soft breathable cotton with lined crotch. Hand washing is recommended. NOTE! Supplier sizes are equivalent to: A=X-Small, B=Small, C=Medium, D=Large and E=X-large, please see the Spanx size guide to choose just the right size for you. Waist made of 87% Nylon and 13% Lycra. Briefs: 81% Cotton and 19% Spandex.