
Watch out sailor sisters! There’s a new line of sailor-themed clothing on sale and this time it’s the boys’ turn to come out and play. There won’t be any trousers or navy hats here though, because the only thing masculine about these clothes are the bodies that will be going into them.
It’s the Boku Sera (“I’m a Sailor”) range, which uses the Japanese male pronoun boku to highlight exactly what sets the clothes apart from all others we’ve seen before: these are girls’ sailor-style school uniforms, only now they’re built for male bodies.
The unusual roomwear items come from Bibi Lab, a design house which specialises in researching unique ideas and bringing them to life, no matter how wacky they seem. Previously, they’ve given us the full-body mosquito net jumpsuit; the snuggie that covers everything except your hands, nose and mouth, and even life-sized human-shaped pillows. Now they’re taking fleece to a place it’s never been before with two special man-sized sailor-style schoolgirl outfits.
The Pure White design features the blue and white colour scheme most commonly associated with Japanese schoolgirls, but if black is more your style, you can opt for a Darkness Black number. Both are available from Japan’s largest e-commerce site Rakuten Ichiba for 6,880 yen (US$57.71) each.

Bibi Lab designed these outdoor styles as “roomwear” items for a number of specific reasons. Firstly, it’s a great way for men to see what it’s like to wear women’s clothing. While some men have no problem with parading around in public in schoolgirl uniforms, more discreet gentlemen might prefer to dress up in the comfort of their homes, away from prying eyes.
And when you’re lazing about at home, you want to be dressed for comfort, which means you don’t want to be squeezing into tight, ill-fitting ladies clothes. Bibi Lab has you covered, by specifically designing their female outfits for the male figure.
▼As long as you fall between a medium or large size, according to the Japanese male sizing system.
Bibi Lab is also singing the virtues of wearing women’s clothing, pointing out that the roomy nature of the one-piece provides “zero stress” around the tummy area, meaning you can let it all hang out while remaining comfortably warm and covered at the same time.
The fleece material increases the comfort level of the clothing so you can lounge around with the lightest of ease. Now that we think about it, fleece uniforms in real schools might actually work, especially in those freezing Japanese classrooms during wintertime.
And for those after some girly details, a pair of knee high socks are included, perfect for showing off the much coveted strip of exposed thigh between skirt and sock.
In their usual light-hearted manner, Bibi Lab also claims that their product can reduce stress. If you’ve had a bad day, or if you’re worried about getting older, simply slip into the comfy sailor suit and all your worries will fade away.
▼ Because sometimes the stress relief of a no-pants lifestyle makes you feel like fireworks are going off behind you.
And if you’re a girl who never got to wear the distinctive schoolgirl outfit growing up, this is your chance to make lost dreams come true!
▼ From reading to gaming to playing with teddy bears, male models show just how comfortable life in a fleece sailor suit can be.
For a quick peek into the world of roomwear sailor uniforms, including a zero stress happy dance, check out the short clip below!















RocketNews24’s Meg models the entire line of Japan’s new schoolgirl outfit loungewear 【Photos】
Japanese schoolgirl roomwear takes sailor suit uniform to another level as wearable blanket
School bag cushions: The ultimate Japanese schoolgirl accessory
“Boku Sera” sailor uniform loungewear for men is back with a new version for spring
Japan’s schoolgirl roomwear outfits are ready for winter with new, extra-warm versions
Cherry blossoms begin blooming in Japan with record-early starts for sakura season
Starbucks Japan releases new My Fruit³ Frappuccino at only 34 stores around the country
The next time you’re feeling stressed out, you could relax on a Pokémon Psyduck chair from Japan
Are Japanese convenience store sandwiches scamming us with their fillings?
Japanese onsen egg maker from 100-yen store Daiso needs to be on your shopping list
A trip to hell on Japan’s ‘vomit ship’: Is it as bad as everyone says it is?
Japan’s budget chain restaurant Saizeriya might just be the perfect first date location
Japanese government says country needs more women’s room toilets to meet modern society’s needs
Super Mario teams up with JR Kyushu for the perfect power-up steamed bun snack
The top 10 graduation songs in Japan as chosen by current Japanese high school students
Train station platform ramen store closes its doors on half a century of history in Tokyo
Studio Ghibli releases Catbus pullback keychain that runs like the anime character
Nine great places to see spring flowers in Japan, as chosen by travelers (with almost no sakura)
Starbucks Japan opens new cafe and art gallery in top Tokyo tourist neighbourhood
Virtual idol Hatsune Miku redesigned with look that adds new elements and brings back old ones
Studio Ghibli adds new Mother’s Day gift sets to its anime collection in Japan
Komachi Shokudo: Japanese mum’s-style cooking for breakfast, lunch and dinner in Tokyo
Pizza Hut Japan teams up with creator of one of the country’s best kinds of ramen for ramen pizza
Starbucks Japan unveils new sakura cherry blossom collection for hanami season 2026
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
The 10 most annoying things foreign tourists do on Japanese trains, according to locals
Naruto and Converse team up for new line of shinobi sneakers[Photos]
Starbucks Japan releases first-ever Hinamatsuri Girls’ Day Frappuccino
Japan’s cherry blossom season predicted to start earlier than we’d thought, especially in Tokyo
Starbucks Japan releases a new Cream Puff Frappuccino for a limited time
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
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
The surprisingly deep differences of sailor suit school uniform collar styes – Kanto-eri and more
The sailor suit kimono combines two iconic fashions into one Japan-packed outfit
Give some Japanese schoolgirl style to your pet with the adorable schoolcat collar
Sailor uniform loungewear for men sells out in 2 days
Turn heads with new Japanese sailor-style school uniform swimsuits
Our reporter wears the Boku Sera schoolgirl outfit, visits Harajuku, takes purikura
Japanese sailor suit school uniform gets an upgrade with traditional kimono details
Japanese schoolgirl uniform lingerie now comes in see-through designs
When Ladybeard meets “Sailor Suit Old Man”, it’s an explosion of manly cuteness【Photos】
Japanese cosplayer dresses as female high school student for new road bike campaign
Manga-inspired sailor-style school uniforms now redesigned as dresses for everyday wear
Not everyone hates school uniforms: Japanese Twitter shows us why
Cosplay like an angelic student in a winged Japanese schoolgirl uniform
Off-the-shoulder schoolgirl dresses look like something Japan would love, but it didn’t make them
Hello Kitty cosplays as gun-slinging schoolgirl from new “Sailor Suit and Machine Gun” movie
Japanese company creates new “Kimono Pyjamas” designed to be worn indoors and outdoors