Seemfree microfiber stretchable fabric. Smooths under clothing. Cotton-lined gusset extended along inner thigh to prevent chafing. Longer leg for modest coverage. Lightweight design, no constriction. 89% nylon, 9% spandex, 2% cotton. Sizing (waist/inches): S (25-27), M (28-30). L (31-33), XL (34-36), 2X (37-40). 3X (41-43), 4X (44-47), 5X (48-50) 89% nylon, 9% spandex, 2% cotton. Sizing (waist/inches): S (25-27), M (28-30). L (31-33), XL (34-36), 2X (37-40). 3X (41-43), 4X (44-47), 5X (48-50)