Backrooms Hazmat Suit Costume
Step into the liminal space as an ASYNC research investigator.
The Backrooms hazmat suit is inspired by the viral Kane Pixels YouTube series, where researchers from the ASYNC Foundation explore a creepy, infinite yellow maze. This costume is highly popular among horror and internet lore fans who love a mysterious, dystopian aesthetic. The look consists of a bright yellow chemical suit, a full-face respirator mask, and industrial safety gear.
- Difficulty
- Medium
- Time
- ~45 min
- Budget
- $40–90
Try it on
See yourself as Backrooms Hazmat Suit
One clear photo of yourself; we render you in this costume — face untouched, full body, about 20 seconds.
One render, $1. No account needed — if it fails you're not charged. Pricing.
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What you need for a Backrooms Hazmat Suit costume
Short on time? Buy it ready-made
Spirit Halloween sells the complete Backrooms Hazmat Suit costume — one box instead of 6 pieces.
Yellow Hazmat Jumpsuit
A hooded, bright yellow chemical-resistant disposable coverall with elastic wrists and ankles.
DIY: Use a yellow hooded rain suit or dye a white painter's jumpsuit bright yellow.
Full-Face Respirator Mask
A black full-face respirator mask with a clear visor and dual side filter canisters.
DIY: Use a black half-mask respirator paired with clear safety goggles.
Black Rubber Gloves
Heavy-duty black industrial rubber or nitrile gloves that extend up the forearm.
DIY: Standard black dishwashing gloves or thick black winter gloves.
Black Rubber Boots
Mid-calf black rubber rain boots or industrial work boots.
DIY: Any chunky black boots or shoes wrapped in black trash bags at the ankles.
Duct Tape
Heavy-duty black duct tape to seal the wrists and ankles for an airtight look.
ASYNC Logo Patch
A printed or embroidered green and white ASYNC Foundation logo on the left chest.
DIY: Print the ASYNC logo on sticker paper or draw it on white tape with green and black markers.
Rather not assemble it? See ready-made Backrooms Hazmat Suit costumes at Spirit Halloween ↗
How to put it together
- 1
Put on your base clothes, choosing lightweight layers as the plastic suit can get very warm.
- 2
Step into the yellow hazmat jumpsuit and pull it up over your shoulders, but leave the hood down for now.
- 3
Put on your black rubber boots, then pull the elastic ankles of the jumpsuit down over the tops of the boots.
- 4
Put on the black rubber gloves, pulling the sleeves of the jumpsuit over the glove cuffs.
- 5
Have a friend wrap black duct tape around your wrists and ankles to seal the suit joints securely.
- 6
Apply the ASYNC logo sticker or patch to the left breast of the jumpsuit.
- 7
Put on the full-face respirator mask, pull the jumpsuit hood up over your head, and zip the suit fully to the chin.
Makeup & hair
No makeup or hair styling is required, as your entire head, face, and hair will be completely covered by the respirator mask and jumpsuit hood.
Backrooms Hazmat Suit for couples, groups, kids & more
- couples
- One person wears the yellow ASYNC hazmat suit while the other dresses as the wire-thin Backrooms Entity (Howler) in a black morph suit.
- group
- Form an ASYNC research expedition team with multiple people in matching yellow suits, carrying VHS camcorders and tripods.
- kids
- Use a child-sized yellow hazard suit with a toy gas mask for a lightweight, safe version.
- Plus size
- Choose a 2XL or 3XL disposable chemical suit to ensure a loose, baggy fit that allows comfortable movement.
Tips
- Hazmat suits trap body heat quickly. Wear moisture-wicking athletic clothes underneath to stay cool.
- If using a real respirator mask, remove the actual filters or use hollow costume filters so you can breathe easily.
- Carry a vintage-style handheld VHS camcorder as a prop to perfectly capture the 1990s analog horror aesthetic.
- For photos, pose in empty, fluorescent-lit hallways with beige carpets and yellow wallpaper to mimic the iconic Backrooms setting.
Backrooms Hazmat Suit costume FAQ
- What do the hazmat suit people do in the Backrooms?
- They are researchers and investigators from the ASYNC Foundation, a fictional company that opened a portal to the Backrooms to study and exploit the infinite space.
- Is a real hazmat suit safe to wear for Halloween?
- Yes, but industrial suits do not breathe. It is highly recommended to buy cheap, disposable painter's suits (like Tyvek) which are lighter and more comfortable.
- How do I make the ASYNC logo?
- You can download the green-and-white ASYNC Foundation logo online, print it on adhesive sticker paper, and stick it directly onto the chest of your yellow suit.
Did you know? The hazmat suits in Kane Pixels' Backrooms series are based on real-world Class A and NBC (Nuclear, Biological, Chemical) protective gear, chosen to give the series a grounded, government-funded research aesthetic.