Adult Grinch Costume Onesie
- Hooded Jumpsuit
Small Moments,
Monster Memories
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Size | Measurement | Standard | Metric |
---|---|---|---|
Small | Chest | 38 1/2" | 98cm |
Small | Sleeve Length | 25" | 64cm |
Small | Waist | 39" | 99cm |
Small | Hips | 40" | 102cm |
Small | Torso Length | 31 3/4" | 81cm |
Small | Inseam | 29" | 74cm |
Size | Measurement | Standard | Metric |
---|---|---|---|
Medium | Chest | 42 1/2" | 108cm |
Medium | Sleeve Length | 25 1/2" | 65cm |
Medium | Waist | 43" | 109cm |
Medium | Hips | 44" | 112cm |
Medium | Torso Length | 33" | 84cm |
Medium | Inseam | 29" | 74cm |
Size | Measurement | Standard | Metric |
---|---|---|---|
Large | Chest | 46 1/2" | 118cm |
Large | Sleeve Length | 26" | 66cm |
Large | Waist | 47" | 119cm |
Large | Hips | 48" | 122cm |
Large | Torso Length | 34 1/4" | 87cm |
Large | Inseam | 29" | 74cm |
Size | Measurement | Standard | Metric |
---|---|---|---|
X-Large | Chest | 50 1/2" | 128cm |
X-Large | Sleeve Length | 26 1/2" | 67cm |
X-Large | Waist | 51" | 130cm |
X-Large | Hips | 52" | 132cm |
X-Large | Torso Length | 37 3/4" | 96cm |
X-Large | Inseam | 29" | 74cm |
- 100% polyester
- Stretch sherpa faux fur jumpsuit has a zipper down center front, embroidered heart on front
- Hood has poly knit lining, embroidered facial features, hair tuft on top
- Rib knit sleeve and ankle cuffs
- Officially licensed
- Made By Us Exclusive
Mean Green Comfort Machine
Some costumes make you jolly—this one lets you embrace the cranky! The Grinch Costume Onesie for adults transforms your wardrobe into a page from a holiday storybook. Covered in fuzzy green sherpa fleece and topped with the unmistakable scowl of Mount Crumpit’s most notorious resident, this officially licensed look is perfect for lounging, pranking, or plotting the end of holiday cheer.
Grinchy Details That Pop
The one-piece jumpsuit zips right up the center, making it easy to suit up for some spirited sulking. The hood features an embroidered version of the Grinch’s facial expression, equal parts unimpressed and iconic, along with a tuft of bright yellow hair that captures his wild, wiry mane. On the chest, an embroidered red heart—still questionably sized—serves as the perfect ironic accent for this curmudgeonly classic.
Soft, Stretchy, and Steeped in Sass
Crafted from 100% polyester stretch sherpa faux fur, this onesie doesn’t just look the part—it feels amazing too. The rib knit cuffs at the ankles and wrists help hold everything in place while you parade around Whoville (or the living room). Inside the hood, a smooth poly knit lining keeps things comfy while you sport your grumpiest grin.
Grump Around in Style
Whether you're scheming from your cave or just cozying up for a holiday movie marathon, this Grinch onesie is an all-in-one ticket to becoming the life—or the anti-life—of the Christmas party. No extra accessories needed, no uncomfortable costume pieces to fuss with. Just zip it, flip up the hood, and embrace your inner misanthrope in the most delightfully fuzzy way possible.
It's playful, it's prickly, and it's the green fleece dream for any grown-up Grinch in disguise.

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.