Date-eri: Fashionable Collar Liner
The "date-eri" is a collar liner layered between the "naga-juban" undergarment and the kimono. Although it's only five millimeters wide, that's more than enough to add some pizazz to your ensemble!
Han-eri: Decorative Collar
Though white "han-eri" are worn for formal occasions, you can pick any design you want for everyday use. Have fun coordinating your outfit!