Big Mouth Monster onesie in Swamp Green, combing its hair with the pink fur comb
Big Mouth Monster onesie in Swamp Green, standing at home
Big Mouth Monster onesie in Swamp Green, sitting on the rug
Big Mouth Monster onesies in five colors, together in the studio
Big Mouth Monster onesies in five colors, group photo, every order ships free
Big Mouth Monster onesie in Swamp Green, mid-air jump
Big Mouth Monster onesie in Swamp Green, size guide, S M L XL
Big Mouth Monster onesies, all eight colors together
Big Mouth Monster onesie in Grape, front
Big Mouth Monster onesie in Cloud Blue, front
Big Mouth Monster onesie in Ocean Blue, front
Big Mouth Monster onesie in Marshmallow, front
Big Mouth Monster onesie in Butter, front
Big Mouth Monster onesie in Cherry, front
Big Mouth Monster onesie in Midnight, front

Oversized fleece monster suit

The Big Mouth Monster Onesie

4.8 · 9 reviews
$144.00 $170.00 $72.00 each
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Free shipping on every order · Mix any colors · Size each monster

Monster fur combIncluded free with every onesie ×2Free gift
The Fuzzy SlippersSlippers matched to your monster ×2 +$19.00 each

Ships within 24h · Arrives in 7 to 14 days · 30-day returns

Description

A big, soft fleece monster suit with a face you can see from across the room. Zip in, pull the hood up, and you are the monster.

Fit & fabric

Cut roomy on purpose: wide through the body, long in the arms, with a hood that holds the big face up. Sized by height, so pick the range that includes you. Between two sizes? Take the bigger one.

Care

Machine wash cold on a gentle cycle, inside out. Tumble dry low or hang to dry. Never iron the face or the fur. Brush the fur with the comb once it is dry and it fluffs right back up.

Shipping & returns

Orders ship within 24 hours on business days. Shipping is free on every order to the United States, Canada, the United Kingdom, Australia and New Zealand. Delivery usually takes 7 to 14 days.

Not in love? Send it back within 30 days of delivery for a refund.

The short version

  • Big on purpose

    One piece, wide through the body and long in the arms, with a hood that holds the big face up. Eight colors.

  • Wash it. It fluffs back.

    Cold wash, gentle cycle, inside out. Tumble dry low or hang it up. Once it is dry, brush it with the free comb.

  • Out the door in one business day

    Then 7 to 14 days to your door. Shipping is free on every order, to the United States, Canada, the UK, Australia and New Zealand.

  • 30 days to decide, 90 days of cover

    Send back an unworn, unwashed suit within 30 days of delivery. If something is actually faulty in the first 90 days, we replace it or refund you.

See it move

Fuzz in motion.

  • The turn-around

  • Cloud Blue + the comb

  • Duo Set, kitchen edition

  • Squad Pack

Big Mouth Monster onesie worn at home

The details

A face you can see from across the room.

Zip in, pull the hood up, and you are the monster. That is the whole manual.

  • The face

    Big lips, googly eyes and a full head of hair, all on the hood.

  • Zip in, hood up

    One piece. Step in, zip, done.

  • Eight colors

    Pick one for each monster. Mix them however you like in a pack.

  • The hair is part of it

    A fur comb comes free with every suit, because the hair needs it.

Big Mouth Monster onesie worn at home

Fit

How it fits.

Cut roomy on purpose. It is meant to swallow you.

  • S, M, L or XL

    Four sizes. Pick one for every monster in your pack.

  • Between two sizes?

    Take the bigger one. Baggy is the whole point.

  • Wide body, long arms

    Wide through the body and long in the arms, with a hood built to hold the big face up.

  • Wrong size?

    Tell us within 30 days of delivery and we sort out an exchange or a refund.

Made for adults and teens. It is loungewear and a costume, not children's sleepwear, and it is not flame resistant, so keep it away from open flames and heaters.

Questions

Before you zip in.

The things people ask right before they buy one.

All questions
  • Will it arrive in time for Halloween?

    Order by October 15 and it should. Orders ship within one business day, then delivery usually takes 7 to 14 days.

    Those are estimates, not guarantees, which is why the date has room in it.

  • Which size should I get?

    It is cut roomy and comes in S, M, L and XL. Between two sizes, take the bigger one. If it still is not right, contact us within 30 days of delivery and we sort out an exchange or a refund.

  • What is in the box?

    One one-piece monster suit for each monster in your pack, and a free fur comb.

  • Can I pick different sizes in a Duo Set or Squad Pack?

    Yes. You choose the size for every suit separately, and the color. A Duo Set is two suits of this character and a Squad Pack is four, at a lower price per suit.

    A pack can arrive in more than one parcel. Each parcel gets its own tracking link.

  • How do I wash it?

    Machine wash cold on a gentle cycle, inside out. Tumble dry low or hang it to dry. Never iron the face or the fur. Once it is dry, brush it with the comb and it fluffs right back up.

  • Can I return it?

    Yes. You have 30 days from delivery to send back an unworn, unwashed suit for a refund. Return shipping is on you, unless it arrived damaged, faulty or different from what you ordered.

    A fault that shows up later is covered for 90 days by our Defects Policy. The full rules are in the Returns Policy.

  • What is the comb for?

    The hair, and the fleece. All fleece pills a little with wear. Brush it once it is dry and the fluff comes back.

What the monsters are saying

4.8

Based on 9 reviews

  • 5★78%7
  • 4★22%2
  • 3★0%0
  • 2★0%0
  • 1★0%0
  • Really soft and comfortable material. Nice weight and great for movie nights.

    Ash V.· In person customer
  • The material is dreamy soft and keeps me cozy without feeling bulky.

    Mel H.· In person customer
  • Softest, coziest fabric. Feels premium and incredibly comforting to wear.

    Sharon H.· In person customer
  • Like slipping into pure softness. Warm, light, and perfect for lounging.

    Claudia· In person customer
  • The plush material is so gentle and warm. Instantly makes evenings better.

    Rosalyn F.· In person customer