Mother-To-Be is a patented retention belt that prevents distortion of the lumbar curve by transferring the abdomen from in front of the center of gravity, back to the spine and over the pelvis. The abdominal lift pad expands to accommodate growth. The moldable insert is custom molded by your health care provider. Designed for those that require additional support to the low back and abdomen. To figure size, order dress size before pregnancy.Non-returnable.