The small barrettes have a 2″ clasp and are great for kids,  or to hold a small amount of hair.  They are the same size as a large earring.   $11.99. 

The medium barrettes have a 3″ clasp and are the same size as an extra large earring.  $12.49.

The large barrettes have a  4″ clasp.  They are 4 1/2″ long.   $13.49.

Stick Barrettes hold a lot of hair.   If you have a lot of hair these are the babies for you!  $12.49