How do I know if my flow if heavy or light?

The dividing line between normal and heavy flow is 80ml during your periods.

We recommend Model 1 for:

SPOTTING A drop or two of blood, not even requiring sanitary pad, though you may prefer using one.

VERY LIGHT BLEEDING Needing to change a low absorbency tampon or pad one or two times per day, though you may prefer to change them more frequently.

LIGHT BLEEDING Needing to change a low or regular absorbency tampon or pad two or three times per day, though you may prefer to change them more frequently.

We recommend Model 2 for:

MODERATE BLEEDING Changing normal absorbency pad or tampon every three to four hours.

HEAVY BLEEDING Needing to change a high absorbency tampon or pad every three to four hours, though you may prefer to change them more frequently.

VERY HEAVY BLEEDING OR GUSHING You would need to change the highest absorbency tampon or pad every hour or two.