NWOT Size: Small/Medium Sizing is based on pre-pregnancy size. If you prefer more comfort for everyday wear, we recommend sizing up in this maternity shapewear. Featuring a non-compressive core that allows for a growing baby bump, this mid-thigh sculpting short smooths thighs, lifts butt, and provides a comfortable hold throughout your pregnancy. For added comfort under clothing, a silicone band on back of waist helps prevent rolling. Non-Compressive Core Allows For Growing Baby Bump, Supports And Smooths Thighs, Supports And Lifts Butt, Enhances Natural Shape Of Body, Silicone On Back Of Waistband To Help Prevent Rolling. Open Gusset. 78% Nylon / 22% Spandex Machine Wash Cold, Do Not Bleach