A 2026 horror trend, on Google’s list
Backrooms costume: the yellow hazmat explorer, step by step
A Backrooms costume is easy to read and hard to forget: a lone explorer in a yellow hazmat suit, lost in endless yellow halls. Here is what the Backrooms are, why the costume is trending after A24’s 2026 film, how to make one at home, and how to turn your costume into a drawing video.
Make a Backrooms drawing video
Level Zero HallwayBackrooms costume: quick facts
- What it is
- An internet legend about endless, empty yellow office rooms
- Film
- Backrooms (2026), directed by Kane Parsons, released by A24
- In theaters
- May 29, 2026 (US)
- At home
- Digital from July 14, 2026; streaming on HBO Max from September 25, 2026 (US)
- Google 2026 list
- The Backrooms is on the trending horror films list
- US searches, Sep 2026
- About 12,100 for “backrooms costume”
What is the Backrooms?
The Backrooms started as an internet creepypasta: a photo of an empty office with yellow wallpaper and the idea that you could slip out of reality into endless rooms just like it. Kane Parsons turned it into a found-footage web series, and then into Backrooms, A24’s 2026 feature film.
The setting is the costume: mustard wallpaper, damp carpet, buzzing lights, and explorers in hazmat suits trying to find a way out.
Why the Backrooms costume is trending
Searches for “backrooms movie” peaked at about 5 million in the US in May 2026, when the film opened, and stayed around 800,000 in September. Searches for “backrooms costume” climbed from about 1,600 last October to roughly 12,100 in September 2026, and the film is on Google’s 2026 trending horror list.
Backrooms costume ideas
Pick the version that fits your time and your crowd.
Hazmat explorer
Yellow disposable coverall, gas mask or respirator, gloves, boots and a flashlight. The most recognizable version.
The hallway itself
A cardboard box painted mustard yellow with a wallpaper pattern and a little ceiling light. Works as a funny group prop.
Lost office worker
Shirt and tie, a lanyard and a blank stare. Subtle, comfortable, and easy at the last minute.
Group of explorers
Matching yellow suits with numbers on the back, like a search team.
Where to watch Backrooms
Backrooms opened in US theaters on May 29, 2026. It came to digital stores on July 14, 2026 and started streaming on HBO Max in the US on September 25, 2026. Availability differs by country.
How to make a DIY Backrooms hazmat costume
About an hour, most of it spent on the badge and the flashlight.
- 01
Get a yellow coverall
A disposable yellow coverall or yellow rain suit, a size up so it bags a little.
- 02
Add mask and gloves
A toy gas mask or a dust respirator, plus black rubber gloves and dark boots.
- 03
Make the patches
Print or draw a simple patch with a number and tape it to the chest and back.
- 04
Carry a flashlight
A real flashlight helps on Halloween night and finishes the explorer look.
- 05
Optional backpack
A worn backpack with a coiled cable or tape on the straps adds a found-footage feel.
Turn your Backrooms costume into a drawing video
Draw your explorer or the endless hallway, upload it, and SpeedPainter turns it into a video of the halls being drawn line by line. There is a chalkboard version too.
Make a Backrooms drawing videoBackrooms costume: common questions
What do you wear for a Backrooms costume?
Most people go as an explorer: a yellow hazmat-style coverall, a mask or respirator, gloves, boots and a flashlight.
Who made the Backrooms movie?
Backrooms (2026) was directed by Kane Parsons, who created the Backrooms web series, and released by A24.
Where can I watch Backrooms?
In the US it has been on digital stores since July 14, 2026 and streaming on HBO Max since September 25, 2026.
Is the Backrooms a good costume for a group?
Yes. Matching yellow suits with numbered patches read as a search team, and one person can be the hallway.
Can I turn a Backrooms drawing into a video?
Yes. Upload your drawing to SpeedPainter and it becomes a hand-drawn video. It animates your picture; it does not generate one.
Sources: Google Frightgeist 2026 horror film list; Google Keyword Planner (US, pulled October 20, 2026); release and streaming dates as reported by A24 and HBO.