One Size Reusable Pocket Type Diaper (Adjusts SMALL-MEDIUM-LARGE in the same diaper) with One Microfiber insert. The baby will sit on a wet-free microfleece fabric that stays dry and allow the urine to fully get absorbed into the four layer insert kept inside the pocket. If we buy a Bumberry for a new born, then it could be used by adjusting the size as the baby grow up. will last till the baby crosses 3 years of age. Preferred by mothers mostly as an excellent Night - Time Diapering option for babies from 6 months to 3 years age. Once the baby starts walking, the pocket diaper could be used as an ANY-TIME functional diaper.