As your baby grows, so does the need for support. Our maternity SI Belt incorporates the same features as the regular SI Belt. Note that the sacral stabilization belt is sold separately. The contoured front elastic panel disperses force from the snug-fitting belt. Through this design, the baby’s growth is accommodated while mom continues to receive the firm support she needs. The combination of elastic front panel with semi-elastic belt conforms to the natural contours of the pelvis.