Adult Opposuits South Park Stan Costume Onesie
- Onesie
Small Moments,
Monster Memories
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| Size | Measurement | Standard | Metric |
|---|---|---|---|
| Small | Chest | 36 1/4" | 92cm |
| Small | Waist | 30" | 76cm |
| Small | Hips | 39 1/4" | 100cm |
| Size | Measurement | Standard | Metric |
|---|---|---|---|
| Medium | Chest | 37 3/4" | 96cm |
| Medium | Waist | 31 1/2" | 80cm |
| Medium | Hips | 41" | 104cm |
| Size | Measurement | Standard | Metric |
|---|---|---|---|
| Large | Chest | 41" | 104cm |
| Large | Waist | 35 1/2" | 90cm |
| Large | Hips | 42 1/4" | 107cm |
| Size | Measurement | Standard | Metric |
|---|---|---|---|
| X-Large | Chest | 42 1/2" | 108cm |
| X-Large | Waist | 37" | 94cm |
| X-Large | Hips | 43 1/4" | 110cm |
| Size | Measurement | Standard | Metric |
|---|---|---|---|
| 2X-Large | Chest | 44" | 112cm |
| 2X-Large | Waist | 38 1/2" | 98cm |
| 2X-Large | Hips | 44" | 112cm |
South Park Has Left the Mountain
Stan Marsh is heading to your Halloween party, and this time he brought the whole vibe with him. This officially licensed OppoSuits onesie captures the beloved South Park character in unmistakable, all-over printed glory.
Cartman Would Respect This Authority
The onesie features a bold, vibrant all-over print showcasing Stan's iconic red and blue color scheme, complete with his signature pom-pom hat and jacket design rendered across the entire garment.
It zips up easily for a hassle-free costume experience, making it one of the most effortless ways to rep South Park with maximum personality.
One Piece, Zero Problems
OppoSuits is known for crafting novelty suits and costume pieces that are both comfortable and durable. This onesie is designed to be worn all night without sacrificing fun or fit.
Sized for adults, it offers a relaxed, roomy feel that works well across a range of body types. No accessories required to complete the look.
Oh My God, They Nailed It
The authentic South Park licensing means the graphics are crisp, colorful, and immediately recognizable to any fan of the long-running Comedy Central series.
Whether surrounded by fellow South Park fans or a crowd who just appreciates a commitment to the bit, this costume delivers laughs and recognition in equal measure.

We believe that costumes have the power to create some of life's best moments. That's why we started Made by Us. This diverse selection of costumes and accessories are all artfully designed and expertly crafted by our talented team of artists, designers, and developers.

Each project begins with a passion for true quality–embroidered patches, faux fur cut with care, and hand-selected fabrics that are as durable as they are comfortable. Those are just a few examples of how much craft and creativity we put into each and every product. Just for you.

No matter how much time it takes, our goal has always remained the same–to create products that inspire your life's best moments–the big, the small, the funny, the spooky, and the sweet. The moments we all cherish. That's Made by Us.
