No one needs just one nappy which is why Honey Child sells systems.  However singles can be useful. 

Singles are mostly purchased as a gift item.  A beautifully boxed Honey Child Nappy with all the information a new parent needs may be just the gentle nudge they need to give cloth nappies a go.  Single colours are also purchased by people who want very specific colours.  Single nappies are also a good way to trial Honey Child yourself, though a Three Pack works even better!  If "giving it a go", add a pack of Honey Child HydroFab Boosters to adjust the nappy absorbency.