Formoonsa Disc is the first menstrual disc available in Taiwan and features a unique triple removal notch design. Intended to address the frustration of other notch-style discs that can rotate in the body, Formoona Disc addressed this with 3 notches and an oval shape. Adorned in celestial motifs, outer space themed texture “grip” on the size Regular basket, and sunny day designs on the size Mini, the discs are also cute. Period Nirvana has a full Formoonsa Disc review and overview and Period.Shop is now carrying both sizes for US customers.
Formoonsa Disc Details and Dimensions
Formoonsa Disc Regular | |
Material | Silicone |
Length Diameter (long side) | 72 mm |
Length (short side) | 63 mm |
Capacity | 53 ml |
Firmness | Average – 3/5 |
Formoonsa Disc Mini | |
Material | Silicone |
Length Diameter (long side) | 64 mm |
Length (short side) | 65 mm |
Capacity | 38 ml |
Firmness | Average – 3/5 |

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What Makes Formoonsa Disc Unique – Overview of Features
Two size options available. The size Regular works for most users and would be considered a “one size fits most.” If you have a low cervix or have experiences pressure or discomfort from larger discs, the size Mini could be a better fit.
It’s oval in shape versus round, which should help prevent the pesky rotation issue notch style discs frequently have- in combination with the three notches around the rim users should have fewer difficulties with gripping the disc for removal.

It has a hybrid notch/ring removal design. Each of the three notches works as a ring when your finger pulls the small band of silicone.
Playful Grip Design – Both Formoonsa size options have a raised grip design motif. The Formoonsa Disc Regular features space-themed designs. The Formoonsa Mini has rainy-day designs.
Formoonsa Disc is average in firmness. I would rate it a 3 but it’s a close call between a 3 and 3.5. It does feel a tad softer in firmness than the Hello Disc and Cora Disc. As always, firmness is subjective and this rating is done by squeezing each product side by side, Things like rim firmness and shape as well as the actual shore of the silicone are part of firmness ratings but this is not an exact science.
How Formoonsa Disc Compaires to Other Brands
The Formoonsa Disc is oval in shape. Both the size Regular and Mini appear to be smaller for this reason.

Formoonsa Disc is an average firmness, coming in at a 3 on the Period Nirvana firmness scale. Other discs in this firmness include Lumma Medium and Ziggy Cup 2.
It’s closest to the Cora Disc and Saalt Disc in the style of removal in both sizes, however, the hybrid ring style could be compared to removing loop style discs like the Diva Disc or Hello Disc if you can fully pull your finger through the loop during removal. As noted in the review, this might not work for everyone and it may function more like a shallow notch if it doesn’t. The just announced Lani Disc is now a very similar hybrid notch as Formoonsa as well.

In size the Formoonsa Disc is a bit hard to pin down because it’s a narrow oval – the longest side puts it closer to larger diameter discs that are considered “large” or “one size.” However, the width of the disc is quite a bit narrower and closer to smaller diameter discs. The oval shape is meant to prevent rotation during wear but if it does rotate the other two notches are available. I did experience one rotation where I couldn’t easily reach any notch.
Check out our Menstrual Cup Comparison Chart for more side-by-side menstrual disc comparisons.
Best Way to Insert Formoonsa Disc
The Formoonsa Disc is folded longways like a tampon for insertion. You will want to make sure the middle notch is the last thing to enter your body. Angle the disc towards your tailbone and insert. Then, tuck the front rim up as high as you can.

Best Way to Remove Formoonsa Disc
The Formoona Disc has three removal notches. Feel for the notch with a finger and pull the disc out. You may or may not engage the “loop” but if you can’t, the notch still functions, it’s just shallow.
Menstrual discs do not create the same kind of “vacuum suction” menstrual cups do in the body. This means you can just pull the Formoonsa Disc without breaking a seal.
First Disc in Taiwan
Vanessa Tseng first introduced the menstrual cup to Taiwan with the Formoonsa Cup. This design is a modified Femmecycle. Formoonsa added a trainer cup as a way of helping introduce internal period cups to a market not familiar with insertable reusables. According to an article by BBC about the launch of the first menstrual cup in Taiwain:
“In the late 1990s, only 2.1% of Taiwanese women said they used tampons, and until 2009, the packaging of tampons sold in Taiwan contained warnings ‘unmarried women should use with caution’, or ‘use the products with doctors’ instructions.'”
The taboos surrounding internal period products mean much more education is needed to promote a product like a menstrual cup or disc.
Formoonsa Disc Review
The experience with Formoonsa Disc was an overall positive one. I had a full period without any leaks or discomfort. Insertion and removal could both be a struggle at times but none of those experiences would have been a dealbreaker for me.
Cleaning Formoonsa Disc required a bit of extra care since tissue can get stuck in the notches. It does mean I can’t wash the disc while sitting on the toilet when I’m in my perfect period bathroom but this is a minor complaint.
Final Score
My ratings are based on using the final version of the Formoonsa Disc. 5 blood drops being a perfect rating. The Formoonsa Disc never leaked and was entirely comfortable. The insertion and removal issues did bring the overall score to a 4, which is still quite high!
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Where to Find Formoonsa Disc
Period.Shop has the Formoonsa Disc available today to our US customers.
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