Buffalo Plaid — Adult Onesie
Classic. Cozy. And yes — there's a trapdoor.
The Buffalo Plaid Adult Onesie is the one that starts conversations, ends arguments about what to wear on Christmas morning, and makes the family photo absolutely unforgettable. That iconic red-and-black Canadian check, head to toe, in a full-body onesie with our signature Moose Caboose trapdoor detail. It's cheeky in the best possible way. Wear it camping, wear it on Christmas Eve, wear it any slow winter morning where the vibe calls for something both cosy and completely ridiculous — in the very best sense.
Crafted from 100% GOTS certified organic cotton jersey that's soft, breathable and built for real family life, this onesie fits like a dream from the very first wear. Snug ribbed cuffs keep everything cosy and secure, the full-body fit gives you all the warmth of a proper onesie, and the gentle stretch means you can move freely through every festive moment — from Christmas morning cocoa to the fireside laugh you didn't see coming.
Part of the Buffalo Plaid family matching collection. Because some traditions are worth starting — and the Moose Caboose is always worth the photo. 🪵
Made from 100% GOTS certified organic cotton. Designed in Vancouver, BC — with love from our family to yours.
Sizes: XS · S · M · L · XL · 2XL
- Regular price
- $70.00 CAD
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Rooted in Family Tradition
Millie + Moose began in a Canadian family workshop — where bedtime stories met fabric and tradition met design. What started as small-batch pajamas for gift shops has grown into something we never expected: a brand that connects thousands of families across Canada through matching moments.
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Where Millie + Moose is Made
At Millie + Moose, every pair of PJs starts right here in Vancouver, BC — dreamed up by our family for yours. We partner with certified, ethical factories in across the world to bring those designs to life. Our team visits partner manufacturers at least four times a year to make sure every stitch meets our standards for softness, safety, and care. Because cozy should always feel good — inside and out.
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What our customers say
- MMichelleRated 5 out of 5 stars4 minutes ago5 Stars
Beautiful quality products. I just love everything that I ordered and the shipping was fast.
- JJeffreyRated 5 out of 5 stars2 months ago5 Stars
Great pajamas for the family!!!
- LLucasRated 5 out of 5 stars2 months ago5 Stars
I like it :)!
- KSKate S.Verified ReviewerRated 5 out of 5 stars5 months agoClassic!
This is our go to camping PJ! It might be tmi but the trapdoor is quite convenient on a chilly night lol. We always snap a fun photo of the crew in their matching buffalo plaid!
Care
Life’s messy — laundry shouldn’t be. Machine wash cold with like colors, skip the harsh bleach, and tumble dry low. Remove while warm for that just-right softness, and iron if needed.
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Spend $125 or more and we’ll cover the shipping — a little thank-you from our family to yours.
Your order will ship within 24 hours - Monday to Friday.