Just in case you happen to forget your period, this underwear will keep you posted.

This is how it works: at the front waistband of this feminine undergarment, a clip holding band is equipped by sewing horizontal and vertical threads in a grid form, and below the clip holding band, a date portion is located in which numerals and heart shapes are printed in two lines. Both edges of the clip holding band are designed to be sewn as to extend from the date portion.

At first, a gold heart-shaped clip is hooked on the right end portion and a silver heart-shaped clip is hooked on the left end of the clip holding band with a vertical pin and a horizontal pin. Moving the clip onto the clip holding band above the date of the date portion below and allowing the vertical pin tip end to protrude from the clip holding band enables the clip to indicate the date below. This enables the recording of the date when the period began and allows for the computation of the time until the next period begins.

Specially designed for forgetful ladies.