Menstrual Cup Size Chart: Leia 49 mm vs DivaCup 57 mm

Menstrual cup sizing comes down to three numbers: body length (how far the cup sits below your cervix), diameter (how it feels at the vaginal opening) and capacity (how often you empty it). Body length matters most, because a cup longer than your vaginal canal will protrude and leak regardless of how well it seals.

Menstrual cup size chart (body length, diameter, capacity)

• Leia Small: 49 mm body, 61 mm total length, 45 mm diameter, 26 mL.
• Leia Medium: 51 mm body, 64 mm total length, 46 mm diameter, 28 mL.
• Leia Large: 66 mm total length, 48 mm diameter, 29 mL.
• DivaCup Model 1: 57 mm body, 41 mm diameter, 30 mL.
• Saalt Small: 55 mm body, 41 mm diameter, 25 mL.
• Lena Small: 52 mm body, 41 mm diameter, 25 mL.
• June Cup Small: 53 mm body, 40 mm diameter, 24 mL.
• Femmycycle Low Cervix: 47 mm body, 44 mm diameter, 30 mL.

Three steps to your size

• Step 1: measure cervix height with a clean finger during your period, when the cervix is lowest.
• Step 2: rule out any cup whose body length is longer than that measurement.
• Step 3: among the cups that fit, pick diameter and capacity by birth history and flow.

Frequently asked questions

What size menstrual cup should I use?

Pick a cup whose body length is shorter than your cervix height measured during your period. Then choose diameter by vaginal birth history — smaller if you have not given birth vaginally, larger after one or more births — and capacity by flow.

Is a bigger menstrual cup better for heavy flow?

Not necessarily. Higher-capacity cups are usually longer, which does not work with a low cervix. With a short canal it is better to empty a shorter cup more often than to force a longer one.

Does menstrual cup size depend on age?

No. Manufacturers often label sizes by age, but the anatomy that matters is cervix height, vaginal birth history and pelvic floor tone.

How long is the Leia Cup?

Leia Small has a 49 mm body and 61 mm total length, Medium has a 51 mm body and 64 mm total length, and Large is 66 mm in total length.

Leia Cup — menstrual cup designed by an OB-GYN for a low cervix. Shop Leia Cup · Find your size