
It’s like an adult version of a cardboard fort.
The 2017 G7 Summit has prompted many nations to crack down on environmental problems in earnest, and Japan is one of them. It’s not just the citizens, though, it’s also companies like Family Mart and their new focus on eco-friendly onigiri packaging.
Toyo Seikan Group Holdings, another large company, has been tackling sustainability recently with their Open Up! Project where they challenge themselves to come up with environmentally friendly solutions to issues. One such solution is a cardboard tent called the Dan Dan Dome that’s durable, waterproof, and 100% recyclable.
▼ It even has windows! You might have to cover them up if it actually rains, though.
The Dan Dan Dome was designed in collaboration with architect Yusuke Murakami, who specializes in architecture suited for polar and other extreme environments like the Himalayas. While in those areas, he spent a lot of time in plastic tents that were heavy, not homey, and definitely not friendly to the environment, so came up with new designs that aren’t so heavy and are more sustainable. After seeing his work, Toyo Seikan Group Holdings enlisted him and packaging specialists at Nihon Tokan Package to create the Dan Dan Dome, and the result is this ingenious, sustainable idea.
Cardboard and water normally don’t mix, but Dan Dan Dome’s cardboard is coated with the same kind of recyclable laminate that’s used in paper cups, which is where the waterproofing part comes in. Clever, right? And while it’s not 100-percent waterproof, it will get you through the night.
▼ You can even watch movies on the ceiling while you’re relaxing inside.
To assemble the dome, all you need to do is pop out the joint perforations and lock them into place as shown in the photo below, then use waterproof tape and plastic grip lock ties to join the sections together. Don’t worry, it comes with instructions, kind of like IKEA furniture. The only downside we can imagine is that it might be difficult to put the dome’s top on if you’re assembling it solo.
Aside from camping and outdoor events, the designers say that Dan Dan Domes can also be used as temporary shelters during disaster relief operations. Besides being durable and water-resistant, they’re also designed to be cozy and give you a sense of privacy at times where that may otherwise be difficult. Many emergency shelters in Japan are public school gymnasiums, so any ounce of privacy in that kind of situation is sure to be appreciated.
Dan Dan Domes will be available on their official site starting this fall, and they’re available in three different sizes. Travel in Japan may still not be the best thing to do right now, but consider this another thing to add to your wishlist for future travel plans!
Sources: PR Times, Dan Dan Dome
Featured image: PR Times
Insert images: PR Times, Dan Dan Dome
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!
[ Read in Japanese ]






Tokyo’s life-size Gundam is getting a new look before its end-of-summer removal
Studio Ghibli store Donguri Republic announces opening of first-ever store in America
Universal Studios Japan is giving Frieren anime fans the chance to make unforgettable memories.
New Japanese overnight train coming to connect Tokyo with Tohoku in sleep-travel style
When is miso ramen not miso ramen? When it’s the new ramen at one of Japan’s top beef bowl chains
Tokyo’s life-size Gundam is getting a new look before its end-of-summer removal
Studio Ghibli store Donguri Republic announces opening of first-ever store in America
Universal Studios Japan is giving Frieren anime fans the chance to make unforgettable memories.
New Japanese overnight train coming to connect Tokyo with Tohoku in sleep-travel style
When is miso ramen not miso ramen? When it’s the new ramen at one of Japan’s top beef bowl chains
Japan now has “edible cat fur” for people who really love felines
Reinvented traditional Japanese hearths may be coming to a restaurant near you
7-Eleven’s new green tea rice ball and sweets are only available in Japan’s top tea-growing area
Japan’s Pokémon Slowpoke Train goes on hiatus, but a mini version could be yours to own
Sanrio Hotel Floria isn’t actually a hotel, but it’s still a must visit for fans traveling in Tokyo
East Japan Railway announces plans to abolish magnetic-strip tickets
New Square Enix Cafe reveals Final Fantasy, Dragon Quest, Nier, and Fullmetal Alchemist menu items
Japan’s cheap beef bowl chain goes upscale with Matsuya Premium, but is it worth the higher price?
Family Mart commits “reverse fraud” in new Giant All-Star Festival, and we couldn’t be happier
7-Eleven Japan joins the craze for Korean Gamja Cheese Balls
Shakey’s Japan creates matcha mochi, Kyoto fish, and Kansai Chili Con Carne pizzas
Anne Hathaway creates PR frenzy in Japan after mentioning Tottori in Devil Wears Prada interview
7-Eleven Japan has a new Creamy Iced Cafe Latte that’s a hit on social media
Kanji ice cream becomes a sell-out hit in Japan
Uniqlo reveals third round of massive 100-year-anniversary manga T-shirts for Jump’s Shueisha
Even at twice regular Daiso price, this handy item is still great for summer travel in Japan
New official Ghibli anime food cookbook will teach you how to make Ponyo’s ramen and more
Japanese convenience store Lawson launches new “mini supermarket” chain, L Minimart
Japan’s real-world Pokémon hot spring’s first photos are here![Photos]
Kyoto public junior high school becomes first in Japan with a hoodie school uniform
Japanese convenience store shows us how to dress for the rainy season
Starbucks Japan unveils new Frappuccino showcasing “mottainai” culture
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
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】
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]
Pokémon and Ikea Japan cross over into each other’s worlds with collaboration events
Japan now has “edible cat fur” for people who really love felines
Reinvented traditional Japanese hearths may be coming to a restaurant near you
7-Eleven’s new green tea rice ball and sweets are only available in Japan’s top tea-growing area
Japan’s Pokémon Slowpoke Train goes on hiatus, but a mini version could be yours to own
Sanrio Hotel Floria isn’t actually a hotel, but it’s still a must visit for fans traveling in Tokyo
7-Eleven Japan has a new Creamy Iced Cafe Latte that’s a hit on social media
300-tonne hose washes up on Japanese shore
Japanese Sakuranbo Mochi goes viral online with millions of views, but is it worth the hype?
Japanese university welcomes birth of baby deer on campus, president waives entrance exam[Videos]
Mos Burger adds Kandy Tea Milk to the menu and Japanese social media is here for it
Shakey’s Japan creates matcha mochi, Kyoto fish, and Kansai Chili Con Carne pizzas
Studio Ghibli adds My Neighbour Totoro futon bedding to its anime store in Japan
Super Mario Galaxy Happy Meal toys now available at McDonald’s Japan
Two of Kyoto’s famous temples tackle streetside trash with solar-powered trash cans