Grinch Onesie

£44.99

  • Fabric: soft flannel, red on the top and bright lime green on the legs
  • Design: green hood with embroidered yellow Grinch eyes and scowling brows, wide white band at the waist
  • Fit: front zip, roomy cut, white cuffs at the wrists
  • Occasions: Christmas jumper parties, Christmas morning, Christmas film marathons, family photos
  • Care: machine washable
  • Ultra-soft fabric | Warm and comfortable
  • Pyjamas and costume | Two in one
  • Any occasion | Bedtime, parties, film nights
  • Gift-ready | One they’ll actually wear
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Size Chart

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Complete your look

Grinch Onesie

Grinch Onesie

£44.99

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  • Fabric: soft flannel, red on the top and bright lime green on the legs
  • Design: green hood with embroidered yellow Grinch eyes and scowling brows, wide white band at the waist
  • Fit: front zip, roomy cut, white cuffs at the wrists
  • Occasions: Christmas jumper parties, Christmas morning, Christmas film marathons, family photos
  • Care: machine washable

Women’s Grinch Onesie for hating Christmas in total comfort

Up on Mount Crumpit, a green grump is plotting to steal every stocking in Whoville, and this year he has borrowed a Santa suit for the job. This Grinch onesie for adults pairs a red flannel top, zipped down the front, with bright lime green legs that could only belong to the Grinch himself. A wide white band circles the waist, white cuffs finish the sleeves, and the green hood carries his slanted yellow eyes and scowling brows, embroidered in full grump. Cindy Lou Who never stood a chance.

A heart three sizes bigger in a Men’s Grinch Onesie

Dr Seuss gave the world its favourite Christmas villain, and the adult Grinch onesie gives that villain somewhere soft to sulk. The soft flannel of this kigurumi keeps December draughts out, the roomy cut forgives every slice of roast beast, and the white cuffs hold the sleeves in place while the hands reach for the last biscuit. Christmas jumper party, office fancy dress competition, Christmas morning photos with Max the dog or a marathon of every version of the film, these festive pyjamas cover it all. Add it to the basket and let the grumbling begin.

Whoville keeps growing

The kids Grinch onesie lets the little ones share the very same design. The Christmas tree onesie makes a perfect partner for a matching duo. More seasonal designs are waiting in the Christmas onesies collection.

Frequently Asked Questions

They’re made to keep you warm on the sofa through autumn and winter, so yes, they’re cosy. The relaxed fit lets air move around, though, so you won’t get that stuffy feeling you get from tight pyjamas.
Machine wash at 30°C on a gentle cycle. Turn them inside out and pop them in a mesh laundry bag to protect the hood. Skip the tumble dryer and the iron. They air-dry quickly and fluff right back up on their own.
Yes, every onesie we sell is unisex. The roomy cut works for men and women alike, our kids’ styles fit girls and boys just the same, and our baby sizes are cut the same way for everyone. Just check the size chart to find your fit.
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Adult size chart (measurements in cm)

SIZEHEIGHTCHESTSHOULDER WIDTHSLEEVE LENGTHONESIE LENGTH (EXCLUDING HOOD)
S144 - 1531164650127 - 130
M154 - 1631204853137 - 140
L164 - 1731245056147 - 150
XL174 - 1831285259157 - 160