Blue Shark Onesie

£39.99

  • Material: plush flannel that traps warmth from the first minute
  • Details: royal blue body, white belly panel, hood ringed with teeth and a red mouth
  • Fit: roomy cut with a button front and elasticated wrists and ankles
  • Perfect for: film nights, pool parties, Halloween, lazy Sundays
  • Washing: machine washable, keeps its colour wash after wash
  • 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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Blue Shark Onesie

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  • Material: plush flannel that traps warmth from the first minute
  • Details: royal blue body, white belly panel, hood ringed with teeth and a red mouth
  • Fit: roomy cut with a button front and elasticated wrists and ankles
  • Perfect for: film nights, pool parties, Halloween, lazy Sundays
  • Washing: machine washable, keeps its colour wash after wash

Women’s Blue Shark Onesie in the ocean blue everyone pictures first

Ask anyone to draw a shark and the pencil reaches for blue. This blue shark onesie for adults matches that picture, with a royal blue flannel body and a white belly panel running from the chest to the knees. The colour is deep enough to read across a room and bright enough to look friendly rather than threatening.

The hood does the work. White teeth run around the opening, a red lining shows behind them, and two small eyes sit on top of the head, so the jaw frames your face the moment you pull it up. Buttons close the front, the cuffs hug the wrists, and the fabric stays plush against the skin.

Cold evenings call for the Men’s Blue Shark Onesie

This adult blue shark onesie is the one people picture when they hear the word kigurumi. The cut is generous through the shoulders and hips, the sleeves reach the wrist without riding up, and the flannel holds heat like a blanket you can walk around in.

Blue also makes the safest choice for a group costume, since it reads as a shark instantly without any explanation. Order it for a themed party, a weekend by the sea or an evening that calls for nothing more ambitious than a film. Add it to your basket and let the teeth do the talking.

More sharks in the same waters

The kids blue shark onesie repeats the same royal blue for a matching family photo. For something closer to a real shark, the grey shark onesie trades the bright blue for open water grey. Every fin and hood in stock is gathered in the shark 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