Bummis Swimmi swim diapers are one of the best selling diaper covers.
SOme swim diapers are designed like a pull up. SO, when your baby poops, you have to pull it down (which can be messy to clean up). Bummis Swimmi is designed just like their regular diaper cover. So, it is easier to clean up the soiled diaper. Also, the velcro tab makes it easier to adjust so that you have a proper fit (unlike pull ups where you have to find a good fit to secure their bottom).