The DOC-band can only correct a child’s head shape if it is worn 23 hours out of the day. To be effective, it must be on as much as possible. Babies are growing and changing constantly. Between birth and 6 months of age, babies are tripling in size. So are their heads. Because of this rapid growth and because each helmet is custom made to the beginning head shape, any time spent out of the band will likely lead to a poor fitting band and less than optimal results.