Prefer mess-free period sex?

is a disposable menstrual disc.

Unlike tampons and menstrual cups, FLEX sits just past the vaginal canal in the same place as a diaphragm and can't be felt at all once in place.

3 tampons

is a disposable menstrual disc.

The first step to understand the benefits of FLEX is to understand your own anatomy.

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3 tampons

FLEX collects fluid instead of absorbing like pads or tampons and can hold as much as 3 super tampons.

Up to 12-hour wear during sleep, exercise, swimming, and more
Mess-free period sex due to the unique positioning
Reduces cramps in up to 60% of users
Reduces dryness and irritation in up to 80% of users
Not linked to TSS

“Flex was designed to solve many of the problems caused by traditional menstrual products. It doesn’t change the vaginal flora reducing the risk of infections and has not been linked to toxic shock syndrome.”

Dr. Jane Van Dis, MD

Certified OBGYN

is easy to use


FLEX may look big but it’s actually smaller than a tampon when you insert it. Start by washing your hands and pinching it in half.


Use your index finger to guide the front edge, tucking it up behind your pubic bone. You shouldn’t be able to feel it at all if it’s in the right place.

Wear it for 12 hours.

Swim, workout, have sex, go to the bathroom, sleep, all without having to worry about leaks or changes.


Always start with clean hands. Take a seat on the toilet and slide your finger up under the front edge of FLEX and pull straight down, keeping it parallel to the floor.


Once you've removed FLEX, turn the disc upside down to empty the fluid into the toilet, place empty disc in a wrapper and dispose in the trash.

“Flex was basically life changing because I didn’t have to worry about changing it.”


“I found this to be 10x more comfortable than a cup while I was lifting.”

Meg Squats

“Flex was great because it slides in and out and there’s none of that horrible cotton pull.”


Questions & Answers
1. What is Flex Disc?

Flex Disc is a flexible ring with a catch that sits at the base of the cervix in a place called the vaginal fornix.

It is single-use and can be worn for up to 12 hours. Because of where the disc sits in the body, it can also be worn during penetrative sexual intercourse.

2. Does Flex Disc work with a heavy flow?

Yes! The majority of our customers have heavy flows - including those with endometriosis and PCOS who swear by FLEX disc. It can hold up to three super tampons worth of menstrual fluid and is 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!

3. Does removing 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 Disc can take a little bit more practice and for some people it can get a little messy. However most people will plan their disc wear around their schedule in order to remove the product in the comfort of their home or in the shower.

4. Can I swim while wearing FLEX Disc?

Yes! FLEX Disc is safe to wear while swimming - in pools, oceans, rivers, hot tubs - wherever, whenever!

  • 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
Period Panties
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!
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 $12.99 every 2 months starting on . We’ll remind you before we process the next order. You can pause or cancel anytime, online.

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 $21.99 every 1 month starting on . We’ll remind you before we process the next order. You can pause or cancel anytime, online.

plan type
Heavy plan $14
12 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 $26.99 every 1 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


$32.99 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

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