I use the invisible with wings mostly with other Libra products. The wings keep it in place. I use it on the last day of my flows. Keeps me dry and the lenth is pretty decent as well.
The thin design feels as if Iam not wearing anything at all. Very flexible and conforms to the body. A bit dear but hey I only use a couple a month cause my pad type changes throughout the flow.
For me with heavy periods either I buy the super pads or I have to go through 3 times as many normal pads. These Invisible Super pads have been the most comfortable while being very absorbent for me in my times of need. The flaps to keep them in the right place are a definite plus.