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ROMPERINBOX

ROMPERINBOX Unisex Baby Onsies Solid Baby Bodysuit Romper Blank for 0-24 Months Boys Girls

  • Based on 4,437 reviews
Condition: New
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Availability: 20 left in stock
Fulfilled by Amazon
Arrives Tuesday, May 12
Order within 20 hours and 20 minutes
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Color: Long Sleeve Black


Size: 18-24 Months


Department ‏ : ‎ baby-girls


Date First Available ‏ : ‎ September 13, 2023


Product Warranty: For warranty information about this product, please click here


Best Sellers Rank: #33,949 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #50 in Baby Girls' Bodysuits


#50 in Baby Girls' Bodysuits:


Customer Reviews: 4.7 4.7 out of 5 stars (4,854)


Brand Name: ROMPERINBOX


Age Range Description: Baby


Unit Count: 1 Count


Number of Items: 1


Garment Size Country: United States


Style Number: RL-black-18-1


Color: Long Sleeve Black


Neck Style: Round Neck


Strap Type: Stretchable


Closure Type: Snap


Pattern: Solid


Back Style: T Back


Sleeve Type: Long Sleeve


Material: Cotton


Product Care Instructions: Machine Wash


Apparel Fabric Weight Class: Medium Weight


Apparel Fabric Stretch: Medium Stretch


Size: 18-24 Months


Recommended Uses For Product: Slimming


Fit Type: fitted


Sleeve Length Description: Long Sleeve


Fit to Size Sentiment: Positive


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • A nice, solid colored onesie
Color: Long Sleeve Green Size: 3-6 Months
A good, basic onesie. I bought this to make my baby a St Patrick’s Day outfit and it did the job. The fabric is sturdy and soft, the fit is good. The color is true to the image and the fabric is stretchy without losing its shape. The sleeves are nice and long and the cuffs and neck aren’t tight. I used fabric paint on it and it worked just fine. A good value for the money. ... show more
Reviewed in the United States on May 5, 2025 by Laura Rebecca McCurdy
    • Great quality
Color: Short Sleeve Yellow Size: 6-9 Months
Review Image by Alyssa Argote
Great quality, material feels very comfortable its thick and stretchy and its a nice shade of yellow I used for a DIY halloween costume.
Reviewed in the United States on February 4, 2026 by Alyssa Argote
    • A+ Quality
Color: Long Sleeve Black Size: 6-9 Months
Great quality! Soft, thick! Arrived on time!
Reviewed in the United States on January 11, 2026 by Karen
    • Fits perfect
Color: Long Sleeve Green Size: 9-12 Months
Review Image by Jalia Rivers
Review Image by Jalia Rivers
Love this onesie. Washed it a few times and it still has its bright color and hasn’t shrunk . Ordered a 6 month my son was in a 6-9 m and it fit perfectly
Reviewed in the United States on February 5, 2026 by Jalia Rivers
    • Good quality - good fit
Color: Long Sleeve Black Size: 9-12 Months
Good quality. Good fit. Color washes out a bit after washing. Seems durable for multiple wears.
Reviewed in the United States on November 15, 2025 by Maria
    • Very soft for baby!
Color: Long Sleeve Red Size: 12-18 Months
I got this as part of a 1st birthday outfit for my baby. The material is thick, extremely soft and well made. I only took off 1 star because the long sleeves ran short for the size, so he grew out of it faster than I had hoped, especially for a $12 onesie.
Reviewed in the United States on December 11, 2024 by Andrea
    • True to size
Color: Long Sleeve Black Size: 18-24 Months
I got the black it’s nice and was true to size. It’s soft.
Reviewed in the United States on November 26, 2025 by Silvia Gomez
    • Look great
Color: Long Sleeve Red Size: 3-6 Months
Review Image by Sandra
Look good, good quality material. Used with iron on transfers for twins.
Reviewed in the United States on February 10, 2026 by Sandra

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