Inflatable Willy Costume
Bring the laughs with this hilarious, self-inflating giant novelty suit.
The Inflatable Willy costume is a classic novelty choice for bachelor parties, bachelorette parties, and adult Halloween events. Designed to turn the wearer into a giant, upright cartoonish pink penis, this suit relies on a built-in fan to stay fully erect. It is a lighthearted, attention-grabbing look that is guaranteed to get a reaction wherever you go.
- Difficulty
- Easy
- Time
- ~10 min
- Budget
- $25–45
Try it on
See yourself as Inflatable Willy
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What you need for a Inflatable Willy costume
Short on time? Buy it ready-made
Spirit Halloween sells the complete Inflatable Willy costume — one box instead of 4 pieces.
Inflatable Willy Suit
A full-body pink nylon inflatable suit shaped like a giant penis, featuring elasticated arm and leg bands and a clear face window.
Battery-Operated Fan and Pack
The small electric fan that clips into the costume's designated ring, powered by a portable battery pack.
AA Batteries
Four high-quality AA batteries to power the fan for several hours of continuous inflation.
Lightweight Undergarments
A breathable t-shirt and athletic shorts to wear underneath the nylon suit to prevent overheating.
Rather not assemble it? See ready-made Inflatable Willy costumes at Spirit Halloween ↗
How to put it together
- 1
Insert four fresh AA batteries into the fan's battery pack.
- 2
Step into the leg openings of the pink nylon suit, pulling it up to your waist.
- 3
Clip the battery pack securely to your personal waistband or pocket inside the suit.
- 4
Slip your arms through the designated armholes, ensuring the elastic cuffs fit snugly to seal in air.
- 5
Pull the hood over your head, positioning your face clearly behind the transparent plastic viewing panel.
- 6
Switch the battery pack to the 'on' position and wait about 1 to 2 minutes for the suit to fully inflate.
Makeup & hair
No special makeup or hair styling is required, as your head and hair will be completely covered inside the hood of the inflatable suit.
Inflatable Willy for couples, groups, kids & more
- couples
- Pair this with a giant condom costume or a retro nurse outfit for a cheeky couples look.
- group
- Have a group wear matching inflatable suits in different colors or pair with other inflatable emoji shapes.
- kids
- This adult-themed costume is not recommended or sized for children.
- Plus size
- The elastic openings and spacious interior make this one-size-fits-most suit highly accommodating for plus-size wearers.
Tips
- Bring extra AA batteries in your pocket, as the fan must run continuously to keep the costume inflated.
- Wear light, moisture-wicking clothing underneath because the sealed nylon suit can trap body heat quickly.
- Mind your clearance when walking through doorways or crowded spaces, as the costume stands quite tall when fully inflated.
Inflatable Willy costume FAQ
- How does the inflatable willy costume stay inflated?
- It features a small, built-in electric fan powered by a battery pack that continuously blows air into the sealed nylon suit.
- Can you sit down while wearing this costume?
- Yes, but it can be awkward. You may need to temporarily turn off the fan or gently compress the air out of the suit to sit comfortably.
- What should I wear underneath the suit?
- It is best to wear lightweight, breathable clothing like a t-shirt and shorts, as the nylon material does not breathe well and can get warm.
Did you know? Inflatable costumes first gained massive mainstream popularity in the 2010s due to their lightweight materials, ease of wear, and viral potential on social media platforms.