The Tickle Tots AIl-in-One Nappy comes with a sewn in absorbent core and an Extra Booster (which cannot be purchased separately). Now you can purchase our new, ultimate Tickle Tots All in One Night Booster to be used with the Tickle Tots All in One nappy. Made up of 3 layers of super absorbent bamboo terry, the Night Booster simply folds in half and slides into the pocket of the nappy to provide 6 layers of extra absorbency when you need it most. Each box contains two night boosters.