Elida, we know how important it is to have an absorbent diaper, and are sorry the Swaddlers Ultra didn't meet your expectations. Size and fit are a huge part of finding the right diaper for your baby. As you know, babies come in all different shapes and sizes so diapers fit every baby differently. Our diaper sizes are organized by weight, and since no two babies are the same shape you will notice some overlap between sizes. In most cases, your baby should be within the weight range for the size you are using. So we can help you further, please call us at (800) 726-7377.