Reinvent how you care for your period.

Free of leaks and stress, the Disc and Cup give you the freedom to be you. Pick your pal, or try both!

Flex Disc

  • 12-hour wear

    Full day. Full night.
    Twelve hours of protection

  • Mess-free sex

    Period-sex but without the mess

  • Reduced cramps

    60% of users experience reduced cramps while using FLEX

  • BPA and latex-free

    Made of 100% medical grade material, hypoallergenic, FDA registered, made without BPA, phthalates or natural latex rubber.

  • Less waste

    Create 60% less waste than traditional products.

Flex Cup

    Ultimate Comfort

    Velvety-soft, form-fitting material for a perfect fit.
    Made of 100% medical-grade silicone in the USA.

    Perfect Fit Guarantee

    Don't stress. If yours doesn't fit, we'll switch it out for another size

    Less Messy Removal

    Our unique pull tab allows for easy, controlled removal.


    Lasts for years to create zero waste and saves you money.

    All-Day Wear

    Keeps you safe from leaks and mishaps for up to 12 hours

Can't pick?

Try Both
Questions & Answers
1. What's the difference between FLEX Disc and FLEX Cup?

Simply put: FLEX Disc is a menstrual disc and FLEX Cup is a menstrual cup.

A menstrual disc is a round, flexible ring with a catch that sits at the base of the cervix in a place called the vaginal fornix. A menstrual cup is a small flexible period collection device that sits in the vaginal canal and is typically tapered at the base.

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.

Because of where the disc sits in the body, it can also be worn during penetrative sexual intercourse, the cup however must be removed before sexual intercourse. Some people prefer the disc, some prefer the cup, and some like to use both depending on the day! Whether you choose single-use disposable discs or a 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.

2. Do they work with a heavy flow?

The majority of our customers have heavy flows - including those with endometriosis and PCOS who swear by FLEX products.

FLEX Disc can hold up to three super tampons worth of menstrual fluid. It is also safe to wear for up to 12 hours. Another benefit of using FLEX Disc on a heavy flow day is that we have a trick for hands-free emptying so you don’t even have to remove your disc to achieve the full 12-hour wear!

FLEX Cup is also a great option for users with heavy flows. The Slim Fit holds the equivalent of 2 super tampons, while the Full Fit holds the same 3 super tampons’ worth of period blood. On heavier days, just like the disc, it may require more frequent emptying.

3. Can I use them with an IUD?

There is a small risk of any internally worn menstrual product getting caught on your IUD - including tampons, menstrual discs, and cups.

If you use an IUD, you should be informed about your particular IUDs benefits and risks and consult with your physician.

4. Does removing them get messy?

Whenever you try a new period product, removal can be a little wonky at first. You may get period blood on your hand but it gets easier the more you do it.

FLEX Cup’s unique pull-tab assists with removal making it easier - and mess-free!

FLEX Disc can take a little bit more practice and yes, for some people it can get a little messy, but most customers find that it's not nearly as messy as they expected.

Most people will plan their disc or cup wear around their schedule in order to remove the product in the comfort of their home or in the shower.

Is FLEX for you?

Answer 7 quick questions to find out.



  • I really feel that flex has changed my life for the better! Endometriosis is so difficult to live with but having a product that actually helps instead of making things worse has been such a relief.


  • The disc is fantastic and I’m delighted that I didn’t feel a thing! No more sitting in a pool of blood. I went swimming with my period & had sex and it was great! I’m free!!! Love the product.


  • I am in love with using flex! It has changed my period week in so many great ways. I can't imagine going back to pads or tampons! One more part of life simplified.


Featured in

  • Your period
  • Your lifestyle
  • Your concerns

Typically, how many days is your period?

How heavy is your flow on your heaviest days?

When did your last period start?

How many weeks do you typically have between periods?

What period product do you use most frequently?

How disruptive can your period be to your life?

What bothers you most about having your period?

What is the one thing you wish you could change about your period?

  • < 2 Days
  • 3 Days
  • 4 Days
  • 5 Days
  • 6 Days
  • 7 Days
  • > 8 Days
LIGHT (1-2 tampons/day)
MEDIUM (3-4 tampons/day)
HEAVY (4-5 tampons/day)
  • < 2 Weeks
  • 3 Weeks
  • 4 Weeks
  • 5 Weeks
  • 6 Weeks
  • 7 Weeks
  • > 8 Weeks
Tampon Tampons
Pad Pads
Menstrual Cup Cup
Menstrual Disc Discs
Period Panties Period Panties
Ellipses Others
Can’t get out of bed
Can’t do certain activities
I mostly feel uncomfortable
Just like any other day
I’m constantly running to the bathroom
I can’t sleep through the night
My work out routine is thrown off
I can’t have sex
I feel uncomfortable
Less cramping
Less odor
Fewer leaks
Risk of TSS
Less waste
If you’re not sure, choose MEDIUM.

All done!

What email would you like your results sent to?

By clicking "See My Results" you agree to
receive email from The Flex Company.

Here is our pick for you!
Flex Box
plan type
Light plan $6.50
4 Discs per cycle per period
8 Discs every 2 months
Light Flow Starter Kit
Includes 8 discs + our Getting Started Guide

We will automatically ship 8 discs for $9.99 every two months starting on . We’ll remind you before we process the next order. You can pause or cancel anytime, online.

Flex Box
plan type
Medium plan $12
8 Discs per cycle per period
16 Discs every 2 months
Medium Flow Starter Kit
Includes 8 discs + our Getting Started Guide

We will automatically ship 16 discs for $18.99 every one month starting on . We’ll remind you before we process the next order. You can pause or cancel anytime, online.

Flex Box
plan type
Heavy plan $14
Discs per cycle per period
24 Discs every 2 months
Heavy Flow Starter Kit
Includes 12 discs + our Getting Started Guide

We will automatically ship 24 discs for $27.98 every one month starting on . We’ll remind you before we process the next order. You can pause or cancel anytime, online.

Try FLEX with some liners at first.

Sometimes you just feel better with a little backup. FLEX plus liners would be a great combination for you while you transition to FLEX to help guard against leaks until you get the hang of positioning FLEX.

Not ready for membership? Try just one FLEX.

Here is our pick for you

Flex Cup
Flex Cup


$34.99 71+ Reviews

1 Menstrual Cup

  • + 1 Carrying Pouch
  • + 2 free Menstrual Discs

The FLEX Cup comes with 2 free FLEX Discs for you to try so that you can experience two new and innovative period products for no extra charge.

Free US Shipping

No Image