The Lytess Laboratories Duo Corrective Brief Belt is a practical, comfortable and lightweight slimming accessory that instantly corrects the silhouette. The Duo Corrective Brief Belt by Lytess Laboratories has an immediate effect: from the moment you put it on, you get an instant silhouette correction that allows you to save up to 2 dress sizes thanks to its unique shape. Easy to use, the Duo Corrective Belt from Laboratoires Lytess offers perfect lumbar support all day long and keeps your loins warm.