Zero menstrual cups are available in two sizes: Small and Large.
Zero cup dimensions are as follows (in mm):
S model (20ml capacity) 42.5 width (diameter), 48.2 length, and 70.3 including the stem.
L model (25ml capacity) 45.5 width (diameter), 52.1 length, and 76.3 including the stem.
Which Size Is Right For Me?
Generally speaking, the small Zero (S model) is recommended for users under 35 and who have never given birth, and the large Zero (L model) is recommended for users over 35 or who have given birth vaginally at any age.
However, there are some other important things to consider before deciding which size to go for:
If it’s your first time using a menstrual cup or you’re a teenager, you may find S model easier to insert and remove at first. If you’re over 35 – L model will be best suited for you.
Some firmer cups can be uncomfortable if you’ve got a sensitive bladder – use S model as it is made of a softer silicone than our L model, so it will contour to your vaginal walls easier without putting pressure on your bladder.
Congratulations on the miracle of birth! L model will be perfect for your vagina: it’s made of silky yet firm silicone, has a higher capacity, and is larger in size – great!
Pelvic Floor Tone
If you lead a very active & healthy lifestyle and have a toned pelvic floor, then S model will be best for you. If you have weaker pelvic floor muscles, then consider L model as the firmer silicone and larger size will prevent any leakage.
Take the time to work out the height & positioning of your cervix – if you’ve got a low sitting cervix, S model could be more comfortable for you as the length of the cup is shorter.
Your Menstrual Flow
Did you know the average amount of menstrual fluid expelled each period is between 20 and 50ml? If you have got a heavy flow, then model L may be more practical for you as it boasts an extra 5ml holding capacity than the smaller cup.
Should I Trim the Stem of my Zero Cup?
It is only necessary to trim the stem of your cup if it is protruding from the vagina once correctly inserted.
Zero Cup is designed with a stretchy, ridged stem to assist with grip and to help you reach the base of your cup for secure removal.
If you have any trouble deciding which size is best for you, feel free to contact Zero for further assistance.