A cup as easy to use as a tampon.

With our patented ReleaseRing™ design, removing your cup has never been simpler.

Have the most comfortable period of your life. ®

Ultimate leak prevention, 12-hour wear, and less cramping and irritation

Easy to Remove

Patented ReleaseRing™ breaks seal and removes the cup in one smooth motion.


Designed for you and the planet, it lasts for years. Simply remove, wash, and reinsert.

12-hour wear

Prevents leaks for up to 12 hours for a full day or night of period protection.

How works.


Wash your hands. Press the sides of the cup together and then fold it in half again forming a tight “U” shape; OR place a finger on the top rim of the cup and press it down into the center making the top smaller for insertion.


Get in a comfortable position, relax your vaginal muscles, insert the FLEX Cup into your vagina, sliding it up and back toward your tailbone (not straight up).


Go and live your life as you normally would! You can swim, exercise, and sleep wearing FLEX Cup. It collects up to three super tampons worth of fluid for up to 12 hours.

Remove and Wash

Simply pull the ReleaseRing™ to break the seal and remove. The ReleaseRing™ pulls the top of the cup in to break the seal and help prevent spillage during removal. Before using or reusing, remove the ReleaseRing™ and thoroughly wash the cup for 20 seconds with soap and warm water.

Questions & Answers
1. How does a menstrual cup work?

A menstrual cup sits in the vaginal canal to collect menses, rather than absorbing it. It’s reusable, so one cup replaces your current products for the heaviest to the lightest days of your flow. Since it doesn’t absorb fluid, it leaves your natural lubrication in place, making it much more comfortable to wear. It can be worn for up to 12 hours, is hypoallergenic and does not affect the natural pH of your vagina.

The cup is folded to insert, and it opens up inside of you. It creates a seal with the vaginal walls to prevent leaks.

2. What is the difference between FLEX Cup and other cups?

With menstrual cups, a seal is created where the vaginal walls meet the cup wall. Once this seal is created, if you were to tug on the cup, you would experience suction.

To remove a traditional cup, you have to reach inside to break this suction. With the FLEX Cup, all you have to do is pull the ReleaseRing which breaks the suction, and the cup slides out easily.

3. How does it not leak?

The FLEX Cup prevents leaks in two ways. First, the cup itself creates a seal with the vaginal walls, which helps hold it in place and funnels everything into the cup.

The second point of leak protection is at the bottom of the cup. The ReleaseRing passes through a hole that is slightly smaller than the ReleaseRing’s pull string, creating a tight seal.

4. Can you feel the loop when it’s in?

Our ReleaseRing is soft and pliable, so it moves with your body, rather than poking against it. You may feel the ReleaseRing right when the cup is inserted, but as it warms to your body temperature and conforms to your natural shape, you shouldn’t notice it.

5. How do I know which size is right for me?

For most people, either size will work— it’s a matter of choosing the best fit for your comfort and capacity concerns.

We recommend that most first time cup users start with our Slim Fit cup. It will be easier to have it open fully once inserted.

However, if are over 30 and/or if you have given birth, the Full Fit will likely result in a better, leak-free fit for you. Our Full Fit cup also has an increased capacity, so it may be the best choice for you if you have a heavier than average flow. (The Slim Fit holds 22 mL of fluid, and the Full Fit holds 30 mL)

7. What is the refund/return policy?

Due to the nature of the product, we are unable to accept returns and all sales are final. Therefore, we cannot issue refunds on product that has already been processed.

8. I have mobility challenges, will this cup work for me?

The FLEX Cup was designed by a woman with a disability to make cups easier to use, and we think it can expand access to use for many more people that have found conventional cups too challenging.

Specifically, our innovative ReleaseRing addresses one of the major pain points with cup use: removal. By giving you the ability to break the seal from below the cup, we hope this design will break down barriers for you.

9. What is the difference between the FLEX Disc and the FLEX Cup?

Menstrual discs sit above the vaginal canal in the widest part of the vagina, called the vaginal fornix. Cups sit in the canal, similar to where a tampon sits.

Both the disc and the cup can be worn for up to 12 hours, but what you do once you take it out is another point of difference. The disc is disposable and single-use only, so you simply empty the contents and throw it away after a single use. With the cup, after emptying the contents, you clean it with soap and water and reinsert as directed.

The disc can be worn during penetrative sexual intercourse, but the cup must be removed before sexual intercourse.

Whether you choose single-use disposable disc or reusable cup is up to you. We believe in the power of choice, which is why we offer the most innovative options in both categories.

10. Where can I learn more about the disc?

Find out more about the FLEX menstrual disc at www.flexfits.com

11. Have another question?

Our trained Flexperts are here to help. Contact us at hello@flexfits.com