How to measure: During your period, wash your hands and insert a finger into your vagina to feel for your cervix (a firm, round, and slightly dimpled structure).

• Low cervix: Shorter or smaller cups are more comfortable.
• Medium cervix: Most standard cups will work.
• High cervix: A longer cup might be easier to reach and remove.

Light flow: Small-capacity cups (15–25 ml) are sufficient.

Moderate to heavy flow: Larger-capacity cups (25–40 ml) help reduce how often you need to empty it.

Weak pelvic floor: Softer cups are easier to insert and remove.

Strong pelvic floor (e.g., if you do yoga or have no issues with tampon insertion): Firmer cups stay in place better.

Small cups: Generally recommended for people under 30 who haven’t given birth vaginally.

Large cups: Often suggested for people over 30, those who have given birth, or anyone with a heavier flow.