Said floats are for the children (4)
I believe the answer is:
boys
'the children' is the definition.
(I've seen this in another clue)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for boys that I've seen before include "They will be themselves, it's said" , "Lads" , "Young men" , "Beach --, group" , "Male children" .)