They're pretty cute, but I think the spellings make them look like girl's names. If you don't care, great! Those names are adorable. But I'd spell them differently--something like Kalen or Kylan.
Not at all I've always imagined it as girl's name but it's the mother's choice and they can name there kid whatever they want!
well i never met a boy named kaylin but my fried tht is a gurls name is kaylin
Yes kaylyn or kyelan would both make very cute names however they are both very similer to the Celtic name Cameron, very distinguished, however it bears close resembalence to a rather impolite term on the bolian homeworld.