Stay Puft Marshmallow Man Costume
Bring the giant, sweet, and destructive Ghostbusters icon to life.
The Stay Puft Marshmallow Man is the iconic, towering paranormal villain from the Ghostbusters franchise. Choosing this costume guarantees you will stand out at any party, thanks to its massive, puffy silhouette. The look consists of a white, segmented body, a blue sailor collar, a red neckerchief, and a white sailor hat with a red tassel.
- Difficulty
- Easy
- Time
- ~15 min
- Budget
- $45–90
Try it on
See yourself as Stay Puft Marshmallow Man
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What you need for a Stay Puft Marshmallow Man costume
Short on time? Buy it ready-made
Spirit Halloween sells the complete Stay Puft Marshmallow Man costume — one box instead of 5 pieces.
Inflatable Stay Puft Suit
A full-body white nylon inflatable jumpsuit with an integrated battery-operated fan to create the puffy, segmented marshmallow look.
DIY: Wear an oversized white sweatshirt and sweatpants stuffed heavily with polyester fiberfill or pillows, cinched at the joints with white elastic bands.
Sailor Collar and Bib
A royal blue fabric sailor collar with white stripes along the border, draped over the shoulders.
DIY: Cut a square collar shape out of royal blue felt and fabric-glue white ribbon stripes along the edges.
Red Neckerchief
A bright red fabric tie or scarf knotted at the center of the chest.
DIY: Cut a triangle of bright red cotton fabric and tie it loosely around the neck.
Sailor Hat with Tassel
A white sailor-style hat featuring a blue band with 'STAY PUFT' in white letters, topped with a red ribbon tassel.
DIY: Decorate a white sailor cap with blue felt tape, write 'STAY PUFT' in white fabric paint, and attach a red yarn tassel to the top.
White Gloves
Simple white cotton or nylon gloves to cover the hands completely.
DIY: Use plain white winter gloves.
Rather not assemble it? See ready-made Stay Puft Marshmallow Man costumes at Spirit Halloween ↗
How to put it together
- 1
Put on comfortable, lightweight base clothes like a t-shirt and shorts to avoid overheating inside the suit.
- 2
Step into the inflatable suit legs first, pulling the sleeves over your arms.
- 3
Install fresh AA batteries into the integrated fan pack and clip the battery pack securely to your waistband or pocket.
- 4
Pull the hood over your head, adjusting the face opening so it aligns comfortably with your eyes and nose.
- 5
Zip up the suit completely and tighten the drawstrings at the wrists, ankles, and neck to ensure an airtight seal.
- 6
Turn on the fan switch and wait about 60 to 90 seconds for the suit to fully inflate.
- 7
Put on the white gloves to complete the seamless marshmallow look.
Makeup & hair
No hair styling or makeup is required if you are using the full-head inflatable mask. If you choose an open-face version, apply white face paint and a cheerful, wide-eyed smile to match the character's deceptive sweetness.
Stay Puft Marshmallow Man for couples, groups, kids & more
- couples
- Pair up with a Ghostbuster equipped with an inflatable Proton Pack.
- group
- Form a group with Ghostbusters, Slimer, and Gozer the Gozerian.
- kids
- Available in adorable plush toddler jumpsuits and baby bunting styles.
- Plus size
- The inflatable suit is naturally roomy and fits most body types comfortably up to size 46.
- pet
- A white dog sweater with a mini blue sailor collar and a tiny sailor hat.
Tips
- Bring extra AA batteries because the inflation fan needs to run constantly to keep the suit plump.
- Navigate doorways and tight spaces sideways, as the inflated suit is much wider than a normal body.
- Stay hydrated, as inflatable suits can trap body heat and get warm quickly inside.
- For photos, strike a stomping pose with arms outstretched to mimic the movie's climactic scene.
Stay Puft Marshmallow Man costume FAQ
- How does the Stay Puft inflatable costume stay inflated?
- It uses a small, battery-operated fan clipped inside the suit that runs continuously to draw in air and maintain the puffy shape.
- Can you sit down in the inflatable Stay Puft costume?
- Yes, but it can be awkward. The air will displace when you sit, so it is best to stand or walk around while wearing it.
- What should I wear underneath the costume?
- Wear light, breathable clothing like shorts and a t-shirt, as the polyester material and fan can make the interior warm.
Did you know? In the original 1984 Ghostbusters movie, the Stay Puft Marshmallow Man was played by actor Billy Bryan in a physical suit made of foam latex and fiberglass.