
From busty cleavage to flat chest in seconds.
Ever since bras were invented, the aim of the brassiere has always been to provide support and comfort. In recent years, though, there’s been a shift in popularity towards enhancing the size of a woman’s bust, with push-up styles and padding to create the perfect cleavage.
So when we heard about a breast-flattening bra from Japan that offers what many others don’t, it immediately piqued our interest.
Called the Petamune Maker (“petamune” translates to “flat breasts”), the innovative bra is manufatured and sold by Japanese company Grand Bleu’s Hadakakushi division, which usually specialises in adhesive patches and sleeves designed to conceal rashes, scars, and tattoos.
The Petamune Maker is said to flatten B-H cup breasts, pushing them down so that they’re hardly visible.
The before-and-after shots above are certainly impressive, but given that these are photos taken by the company to promote the product, we couldn’t help but wonder if the effects would be equally as impressive front-on and in real-life.
Here to lay our uncertainties to rest is Japanese cosplayer and Twitter user @shiomi333871, who recently went viral with her own before-and-after shots using the product.
The image on the top right of the tweet below shows @shiomi333871’s bosom on a regular day, while the image on the bottom right shows how it looks with the Petamune Maker.
https://twitter.com/shiomi333871/status/1238506787214520320The change from noticeable cleavage to flat chest is dramatic, and Twitter users agreed, saying:
“I wasn’t sure about this product but after seeing this before-and-after I’m converted!”
“I bought one of these too and was so surprised by the results. Plus, it doesn’t feel tight to wear.”
“I wear this with kimono and it makes the lines of the clothing look neat and smart.”
“This would be useful when wearing a yukata summer kimono!”
“I need one of these to stop the shirt button from popping on my chest.”
“This is perfect not just for cosplayers but big-breasted women who want to exercise with maximum support.”
As the comments show, there are a wide range of uses for the bra in making everyday activities more enjoyable, from cosplaying through to exercising and traditional events where kimono are worn.
Wearers say the bra isn’t just dramatic in its chest-flattening abilities, but incredibly comfortable too. The Petamune Maker can be purchased online from the Hadakakushi site for 3,036 yen (US$28.44) or at sites like Rakuten and Amazon Japan.
And in case you’re in the mood to boost your bust rather than flatten it, Japan has you covered there too.
Source: Hachima Kikou, Hadakakushi via PR Times
Featured image: Pakutaso
Insert images: Hadakakushi
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!


Breast-flattening bra for cosplayers, women who want less bust-focused attention on sale in Japan
New Japanese bra liners cause cheers from women, complaints from horny dudes
Want big breasts? Japanese cosplayer shows how to boost your bust in seconds
Japan’s best conveyor belt sushi restaurant of seven years ago has now, finally, come to Tokyo
Lawson convenience store at popular tourist site is one of the most unusual in Japan
Japanese trains in Sapporo might be better than those in Tokyo, thanks to one special feature
Krispy Kreme Japan giving free donuts with morning drink purchases at all branches, maybe forever
Wisteria season starts early with blooming of Japan’s Great Wisteria in its beautiful garden
30 Pikachus want to share a Tokyo hotel room with you that has separate Grass, Water, Fire spaces
Mr. Sato discovers his inner beaver with a 16-inch chocolate “twig” at Tokyo Station
Starbucks Japan releases FIVE new Frappuccinos in a day, and we try them all in 90 minutes
Why is Yoshinoya called Yoshinoya?
Pringles Chocolate, but with a Japanese twist, is the snack hack you should be trying right now
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Mt. Fuji decorated with a 500,000-flower pink carpet is Japan’s ultimate spring view
Pokémon and Ikea Japan cross over into each other’s worlds with collaboration events
Starbucks Japan closing only Shinkansen platform branch for popularity-triggered renovations
You can assemble a well-balanced team of Pokémon, them eat them, thanks to Japanese cake chain
Man bites woman at cherry blossom park in Japan, dies shortly after
7-Eleven Japan’s new baked-in-store sweet treat is only available in three parts of the country
Peanuts and Coke becomes a viral hit in Japan, but is it a trend worth joining?
Japan now has a special desk for people who work at home with a pet cat[Photos]
Famous Tokyo cherry blossom spot installs view-blocking screens to fight overcrowding[Video]
Uniqlo announces new T-shirts for One Piece, Naruto and more for manga publisher’s 100th birthday
Train station platform ramen store closes its doors on half a century of history in Tokyo
Starbucks Japan releases new My Fruit³ Frappuccino at only 34 stores around the country
Krispy Kreme releases Super Mario doughnuts in Japan for a limited time
Japanese onsen egg maker from 100-yen store Daiso needs to be on your shopping list
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Japan’s newest Shinkansen has no seats…or passengers [Video]
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says