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Free U.S. standard shipping on orders of $75.00 or more30-day returns

Monster Onesie Pajama Costume Big Mouth Style Thick Fleece

From $62.99

In stock — ready to ship

Stay warm and get a laugh with this oversized monster onesie. It is a thick fleece jumpsuit with a plush puppet-style monster head on the hood, large eyes, a wide open mouth, and a hair tuft on top. A small monster face is on the front pocket. Wear it as a wearable blanket on winter nights, as pajamas for a pajama party, or as a costume for trick-or-treating.

Color: Green Onesie
Size: Select a sizeSize guide
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  • Secure checkout
  • Free shipping on orders of $75.00 or more
  • 30-day returns
Product Description

Each unit is one monster onesie.

  • Adult sizes: S, M, L, XL, XXL. Height guide: S 59.1 to 61.0 in, M 61.0 to 65.0 in, L 65.0 to 68.9 in, XL 68.9 to 72.8 in.
  • Kids sizes: 80-90, 90-110, 111-130, and 131-145 cm, suited to ages 2 to 15.
  • Choose from green, purple, white, blue, orange, yellow, light blue, and two-tone black and red or black and yellow.
  • Some colors come as a set with shoes and a pink comb.
Materials & Care

Follow the care label sewn into the garment.

Size & Fit

Sizes S, M, L, XL, XXL, 80-90, 90-110, 111-130, 131-145

Sizing help

Shipping & Returns

Orders are prepared in 1–2 business days and ship within the United States. Standard shipping is free on orders of $75.00 or more; below that it is $6.99.

MethodHandlingTransitTotalCost
Standard1–2 business days5–7 business days6–9 business days$6.99, free on orders of $75.00 or more
Express1–2 business days2–4 business days3–6 business days$12.99
Overnight1–2 business days1–2 business days2–4 business days$24.99

Returns are accepted within 30 days of delivery, with no restocking fee.

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