Underworks UMBILICAL AND MID-INCISIONAL HERNIA SUPPORT BRIEF NylonSpandex Size - Measure around largest part of mid-section - Small 28-32 / Medium 33-36 / Large 37-40 / X-large 41-44 / 2X 45-48 / 3X 49-52 / 4X 53-65 Indications: Umbilical and Low Incisional Hernia Washable with Foam cushions built in. Undetectable under clothing Quality Construction, Made in USA