# DILUFUN Baby Shark Onesie Costume, Flannel with 3D Hood and Two-Way Zipper

DILUFUN Baby Shark Onesie has a flannel body and 3D hood for cool-weather costume parties, photos, and everyday wear.

- [Original product page](https://www.ofertitastop.com/us/product/dilufun-baby-shark-onesie-costume-flannel)
- Market: US
- Language: en-US
- Currency: USD
- Product updated: 2026-10-14T17:55:38.337Z
- Brand: DILUFUN
- Category: Apparel & Accessories > Costumes & Accessories > Costumes
- Source store: amazon US
- Active deal: Yes
- Price: 7.49 USD
- Previous price: 14.99 USD
- Rating: 4.8 / 5
- Reviews: 230

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## Description

A simple layer for everyday wear and a playful costume for a party solve different needs. This DILUFUN shark onesie aims to cover both, with a flannel body and an animal-style hood.

The design is listed for babies and toddlers, with sizes from 3–6 months through 3–4T. Its two-way zipper and roomy cut are practical details for getting dressed and changing a diaper.

It is described for fall and winter use, as well as occasions such as Halloween, Christmas, cosplay parties, birthdays, and baby photos. The listing does not provide garment measurements, so the age range is the available sizing guide.

## Spec sheet
- Name: Baby Toddler Shark Onesie Costume
- Type: Baby and toddler animal costume outfit
- Material: Flannel with a napped finish on both sides
- Closure: Two-way zipper
- Design: 3D animal hood, sewn-on ears, and elastic cuffs
- Sizes: 3–6 months, 6–12 months, 12–18 months, 18–24 months, 2–3T, and 3–4T
- Care: Hand or machine wash, machine-wash temperature is listed as below 40℃

The flannel construction and hood make this more of a cozy one-piece than a lightweight dress-up layer. The zipper opens from the top and bottom and extends to the back, a layout intended to make dressing and diaper changes easier. Elastic cuffs are described as helping keep the fit close at the wrists and ankles. Those details suit a baby who needs a warm outfit with a costume look, rather than a separate accessory set.

## Who it’s for
This is aimed at parents shopping for a shark-themed outfit that can serve as both casual clothing and seasonal dress-up. The six listed size bands cover infants through toddlers, and the product description calls the cut baggy with some room to grow. That can be useful for layering, but the listing gives no measurements for comparing the garment with a child’s current clothes. A solid pick if you want one soft-feeling outfit for a cool-weather family gathering, a costume occasion, or a photo session.

The maker says the flannel is breathable and absorbent and recommends washing before first wear because baby skin can be sensitive. Those are product claims, not a substitute for checking the care directions and fabric details against your child’s needs. Hand washing or machine washing is listed as suitable, with a below-40℃ machine-wash temperature suggested to help preserve softness.

## Everyday use
The hood’s 3D animal design and sewn-on ears give the onesie its recognizable costume look, while the one-piece format keeps the outfit simple. It could work for a child wearing it around the house before a Halloween event, or as a warm layer for a Christmas gathering. Compared with choosing a dedicated costume for a single occasion, this outfit is also presented for regular wear. The trade-off is that its flannel, cozy design is specifically positioned for autumn and winter, not as a lightweight option for warm weather.

## When it makes sense
Choose this shark onesie when a soft, warm-feeling outfit with a built-in costume design suits the season and occasion. It might not be a great match if you need a lightweight costume for warm conditions, the listing instead emphasizes cozy fall and winter wear. Since the size feedback in the available buyer summary is inconsistent and garment measurements are not supplied, selecting by the listed age band alone may not settle the fit for every child, depending on how you use it.

## Images

![DILUFUN Baby Shark Onesie Costume, Flannel with 3D Hood and Two-Way Zipper — 1](https://www.ofertitastop.com/i/uG46oSVGgdyB3MWDfcp4wK0cKpNjJ4HQHkm984Ct-29mRUGM2G3ItBbxquFjc0YG7vX-M07EqkKuREC7el0EYC3DeOloaMxqSXAZJX2fsoPbr27cF08Vkag2Dw.jpg)

![DILUFUN Baby Shark Onesie Costume, Flannel with 3D Hood and Two-Way Zipper — 2](https://www.ofertitastop.com/i/5_3LJ4rXjAdebDO2SgQnopbljG3I7u5areJL5sNK1dw-5FhJ1nJDhCp8fQmJiobez4Lz5S9E8_witCuffu01Xg3lP51WvKiNgA-qgbMTRK-EHo4Zhqm8lmaIcA.jpg)

![DILUFUN Baby Shark Onesie Costume, Flannel with 3D Hood and Two-Way Zipper — 3](https://www.ofertitastop.com/i/MSjHT-P1byTVqs6UFiK6V902e8EoMdk7i5k71an03w6o7xbEkAVuduXLlGVGAM7YmTTuMB7Qaoo1QYxTbrjgvXI_nyEug8Fo588GGgw9oz4gZjQtO2SNxxmuGQ.jpg)

![DILUFUN Baby Shark Onesie Costume, Flannel with 3D Hood and Two-Way Zipper — 4](https://www.ofertitastop.com/i/zJHbtJIaE52XDe6phCBpWuuLPiGZ-9PyYS9uQEk2ZaVFMxtwDU8AU8nxplswfEh7GiSX3vcSwbgPjV_FBXHJrbfFL0fpozj3EXWcv_NAul43jJZd5sAk-cBPyg.jpg)

![DILUFUN Baby Shark Onesie Costume, Flannel with 3D Hood and Two-Way Zipper — 5](https://www.ofertitastop.com/i/b3l7kz2e7HR37AZMQ_RbnzlmhnvFL2VhmBtEQOrzrAEu_SVZahJctNQLQC_xbLUhraouHGumaBxU1U4cSgc7W0ZfcwIzS2nbWEXJJhvNEN0q6_2F4ElkVeHXxw.jpg)