Find Your Size

First, determine the proper fit.

Lumma™ is proud to be the only company in the world to offer three sizes of menstrual discs.
To get the ideal size, compare the finger length with a ruler before measuring, noting which part of the finger measures 3.8cm (typically from tip to first joint) and 5cm (typically from tip to second joint).

Preparation stage for identification or insertion of the menstrual disc - step 1
Clean your hands and find a comfortable position.
Preparation stage for identification or insertion of the menstrual disc - step 2
Insert your index or middle finger into your vagina and take it as far as you can.
Preparation stage for identification or insertion of the menstrual disc - step 3
Your cervix is located exactly where your finger stops. You should feel something soft, but firm and stiff, almost like the tip of your nose.

What is the right size for you?

Menstrual disc size identification criteria for low cervix

Short

If you feel your cervix with your 1st knuckle inserted (up to 1½ in / 4 cm), you have a short cervix.
Menstrual disc size identification criteria for mid-size cervix

Medium

If you can only feel your cervix after inserting 2 knuckles (between 1½ in / 4 cm and 2½ in / 6 cm), you have a medium cervix.
Menstrual disc size identification criteria for high cervix

High

If your cervix is more than 2½ inches away, you have a high cervix.