These black Spanx Thinstincts high waist mid-thigh briefs are made from lightweight stretch fabric. They're cut with bonded front panels for extra support and are finished with a mid-thigh invisible hem for ease of movement. They boast shaping Level 2 support which offers a 'firm hug' to the wearer. This sleek style is perfect for wearing under A-line dresses. We've always been told to follow our natural instincts, so wearing these Spanx briefs under our LBD is a definite yes in our book.