This cowl is quick and lovely, suited for anyone. Not too girly, with just enough feminine detail. Leave off the shell border and add a couple of stitches to the garter edge stitches for a more manly/unisex look.
This cowl is knit length wise, grafted together, and then the border is crocheted on. This one had a fairly small circumference, making its fit close to the neck. Knit it longer for a looser fit, or you could even do a mobius if you knit it long enough and then add a twist before grafting. It’s up to you.