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The only cup in the world that can be removed like a tampon

This is the cup - the best cup for beginners, for period pros, and for people who are tired of outdated menstrual care. The pull tab makes this cup easier to use than any other cup. Plus, it lasts for years saving you money and creating zero waste along the way.

FLEX Cup comes in two sizes so you can choose the perfect fit for your flow and your body.

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No toxins, not ever

What we put in our bodies is important. You don't have to make compromises with FLEX. Our products are safe for your body, regulated by the FDA, and made with supreme care and consideration. No chemical bleaches, no toxins, no issues. Only the good stuff.


why it's special

  • All-Day Wear. Keeps you safe from leaks and mishaps for up to 12 hours, so you can spend your day sleeping in, staying up late, or doing whatever makes you happy.
  • Innovation. This is the ONLY cup in the world that can be removed as easy as a tampon. We spent an entire year creating the "holy grail" of cups by combining shape with softness so you won’t feel it once it’s in place. Oh and that velvety pull-tab, it’s not like traditional cup stems, it’s super soft, flexible and even adjustable in length to fit your needs.
  • Sustainable. 100% reusable, lasts for years, creates zero waste & saves you money. The planet might just send you a thank you note.
  • Local Love. Unlike other cups, we make ours in the USA. Developed at a world-class medical device manufacturer, FLEX Cup is FDA compliant, made of 100% medical grade silicone and doesn’t contain toxins. Your vagina’s pH and natural lubrication can rest easy.
  • Perfect Fit Guarantee. We’re determined to get your size right. If yours doesn't fit, we'll switch it out for another size.

you got this

Watch our how-to video here
  1. Insert - Wash your hands and the FLEX Cup for 20 seconds. 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).
  2. Wear it for up to 12 hours.
  3. Remove - 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 warm water.

Are you afraid to try it? We totally get it, trying something new can be challenging but once you nailed it, your period will never be the same. If you need help, our team of amazing FLEXperts are here for you at hello@flexfits.com

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Ultimate Comfort

FLEX Cup is velvety-soft and forms to your body for a perfect fit

why FLEX Cup?

FLEX Cup is for doing more.

  • FlexCup

    Up to 12-hour wear, no frequent changes

  • FlexCup

    Sleep, exercise, swim, and more…

  • FlexCup

    Reusable and lasts for years

  • FlexCup

    Less messy removal

FLEX is for peace of mind.

  • FlexCup

    Ultimate comfort and velvety-soft

  • FlexCup

    Perfect Fit Guarantee

  • FlexCup

    Hypoallergenic and pH neutral

  • FlexCup

    FDA approved. BPA, phthalate free

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Read our glowing customer reviews TEST

average rating 4.9 out of 5
Based on 60 reviews
  • 5 Stars
    55 Reviews
  • 4 Stars
    2 Reviews
  • 3 Stars
    3 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
97% of reviewers would recommend this product to a friend
Customer photos and videos
Review posted
Reviewed by Lana R.
Rated 3 out of 5

Phasellus sed purus molestie

Nunc et sagittis mi. Vivamus imperdiet finibus pellentesque. Vestibulum lobortis luctus arcu at accumsan. Integer pharetra arcu non nunc convallis ullamcorper. Cras ornare lorem vel placerat sodales. Praesent non felis placerat, semper nisl non, blandit eros. Fusce lobortis sapien eros, a imperdiet lorem convallis id. Nulla sed dapibus mi. Sed lobortis hendrerit libero, id posuere sem malesuada id. Vestibulum tempus nunc diam, eget scelerisque felis faucibus at. Phasellus ullamcorper erat quis purus ullamcorper, ac faucibus felis gravida. Pellentesque varius nulla nec nisl posuere, eu lobortis libero bibendum. Sed vestibulum facilisis erat at ornare.

I recommend this product
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Review posted
Reviewed by Charisa
Rated 5 out of 5

Best Period of my LIFE!

Also it has been the cleanest and most odorless period. This was my first time using a cup - I was a bit nervous. I did experience mild spotting (so mild it didn't require a pad). Also, the "cup" lets you know it is full - or getting there, so even though it hadn't been the full 12 hours I changed my slim cup at 9 hours. Cleanest because this was the first period I didn't "leak" and none of the smelly tampon changes! The pull tab is what made me comfortable to finally try it, it felt similar to having a string and made it very easy to remove.

I also had far less cramping then normal.

I thought changing the cup would be "gross" but compared to the smell of changing a tampon I will take this any day.

I wish I knew about this sooner (like I'm actually looking forward to my next period).

I recommend this product
Was this helpful?
Review posted
Reviewed by Dolores Del R.
Rated 5 out of 5


This is my 3rd day trying the flex cup, I have had a few leaks, but normally on the first 3 days my flow's so heavy, I would wear 2 tampons at a time and have to change them every 45 min to an hour (super tampons)plus wearing a pad, I do like the cup a lot, but I think it's a bit too big an may purchase a smaller size, my shape is tilted up and very deep-set .l will keep trying with it, you can't feel it when it's in easy to clean and insert, and awesome for the environment!!

I recommend this product
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Review posted
Reviewed by Mariana C.
Rated 5 out of 5


Words cannot express how glad I am I finally tried this product. About 5 years ago, I tried a menstrual cup of a different brand and had a terrible experience. The thing got *stuck* in my vag. After HOURS of uncomfortable clawing and digging I finally got it out, and threw it right in the trash. The issue was that I couldn't get a grip on the stem to break the seal and pull it out.

Since that experience, I've just been using tampons with no issue. But, for some reason during my past couple periods I became sensitive and hyperaware of the tampons, and just wanted to pull them out all day. I decided to try the flex cup because I thought the loop would address the problem I had with the other brand, and it totally did. I was easily able to get ahold of the loop and pull, which automatically broke the seal for me. It was so easy. I'm still getting used to the insertion - it just feels different than what I'm used to with tampons - but I'm sure I'll get used to it.

Flex totally converted me!

I recommend this product
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#1 in Cosmo’s recommended list
of menstrual cups

If you want a cup that’s as easy as pulling out a tampon string: Flex Cup

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Looking for FLEX Discs?

Get them here
  • Benefit one
  • Benefit Two
  • Benefit Three
  • 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.

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