These haven't let me down. I use these on regular flow days but they could handle alot more without a doubt. These are very flexible and comfortable and they do not bunch like some of the pads I've had before. The adhesive is pretty good (not overly sticky) and your pad most probably won't move around. It is not the longest pad, however, and i sometimes get some front-back leakage but nothing too bad, plus it's probably my fault for using it on heavy flow days, sometimes. It's great, it's soft and comfy, it's flexible and 93% of customer recommend it, but it has a few flaws, like anything: 1. The wings aren't that strong (they don't break or anything but it would be nice to have more durable ones cause they bunch up) 2. The wrapper is a bit too flashy for my taste (I've seen worse) 3. Sometimes the actual foam tends to rip, not very much but if I tried i could probably rip it right down the middle. Love these, five stars.