Find the perfect fit
Size guide
Our costumes run true to size and leave room to crawl and play. Between two sizes? Size up — babies grow fast!
| Size | Baby height | Length | Chest | Sleeve | Shoulder | Tag |
|---|---|---|---|---|---|---|
| 2–6 Months | 23–27"59–68 cm | 22.1"56 cm | 22.1"56 cm | 9.9"25 cm | 9.9"25 cm | 70 |
| 6–12 Months | 27–30"68–76 cm | 25.2"64 cm | 24.4"62 cm | 11.0"28 cm | 10.6"27 cm | 80 |
| 12–18 Months | 30–32"75–82 cm | 26.8"68 cm | 25.2"64 cm | 12.2"31 cm | 11.4"29 cm | 90 |
| 18–24 Months | 31–35"80–90 cm | 28.4"72 cm | 28.4"72 cm | 13.0"33 cm | 12.2"31 cm | 100 |
| 24–30 Months | 35–39"90–100 cm | 31.5"80 cm | 29.9"76 cm | 14.2"36 cm | 13.0"33 cm | 110 |
| 30–36 Months | 39–43"100–108 cm | 33.1"84 cm | 31.5"80 cm | 15.4"39 cm | 13.8"35 cm | 120 |
📏 Choose by your baby's height first. Measurements are taken flat by hand — please allow a 0.4–1.2" (1–3 cm) difference.
Cuddly Shark – Hooded Baby Costume Onesie
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Bundle & save
Buy 2 costumes, get 15% off — applied automatically at checkout.
- Free US shipping over $50 · Ships in 1–3 business days
- Free returns & exchanges within 30 days
- 100% secure payment
- Tracking link sent by email
Description & details
Meet your little one's new favorite outfit! This cuddly shark costume onesie is made of super-soft plush fleece, with an embroidered smiling face, soft felt teeth around the hood and a little fin on the back. Perfect for photos, birthdays, Halloween, baby showers or a cozy day at home.
- Cloud-soft plush fleece — warm, cozy and gentle on skin
- Full front zipper — quick and easy to put on and take off
- Adorable details — embroidered eyes, soft felt teeth, fins on the hood and back
- Elastic cuffs on wrists and ankles for a comfy fit while crawling and playing
- Easy care — machine washable
Sizing tip: choose by your baby's height first. Between two sizes? Size up for a roomier fit.
Always supervise your child while wearing a costume. Keep the hood down during sleep and avoid overheating.
Care instructions
Machine wash cold (86°F / 30°C), inside out, with similar colors. Tumble dry low or hang dry. Do not bleach. Do not iron decorative parts (eyes, ears, appliqués).
Safety
Designed as a cozy costume for playtime, photos and special occasions. Always supervise your child while wearing it. Keep the hood down during sleep and avoid overheating. Check seams and decorative parts before each use. Keep away from open flames.
Shipping & returns
Orders ship within 1–3 business days and arrive in 7–15 business days. Free US shipping over $50. Free returns & exchanges within 30 days.
Find the perfect fit
Size guide
Choose by your baby's height first. Between two sizes? Size up for a roomier, cozier fit.
| Size | Baby height | Length | Chest | Sleeve | Shoulder | Tag |
|---|---|---|---|---|---|---|
| 2–6 Months | 23–27"59–68 cm | 22.1"56 cm | 22.1"56 cm | 9.9"25 cm | 9.9"25 cm | 70 |
| 6–12 Months | 27–30"68–76 cm | 25.2"64 cm | 24.4"62 cm | 11.0"28 cm | 10.6"27 cm | 80 |
| 12–18 Months | 30–32"75–82 cm | 26.8"68 cm | 25.2"64 cm | 12.2"31 cm | 11.4"29 cm | 90 |
| 18–24 Months | 31–35"80–90 cm | 28.4"72 cm | 28.4"72 cm | 13.0"33 cm | 12.2"31 cm | 100 |
| 24–30 Months | 35–39"90–100 cm | 31.5"80 cm | 29.9"76 cm | 14.2"36 cm | 13.0"33 cm | 110 |
| 30–36 Months | 39–43"100–108 cm | 33.1"84 cm | 31.5"80 cm | 15.4"39 cm | 13.8"35 cm | 120 |
📏 Choose by your baby's height first. Measurements are taken flat by hand — please allow a 0.4–1.2" (1–3 cm) difference.
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Questions?
Frequently asked questions
How do I choose the right size?
Choose by your baby's height first, then weight — see the size guide on each product page. Between two sizes? Size up for a roomier, cozier fit.
What is it made of? Is it warm?
Our costumes are made of soft plush fleece. They are warm and cozy, so dress your baby lightly underneath and adjust to the room temperature.
Can my baby sleep in it?
Our onesies are designed as cozy costumes for playtime, photos and special occasions. For sleep, always follow safe sleep guidelines: hood down, no overheating, baby on their back.
How do I wash it?
Machine wash cold, inside out, with similar colors. Tumble dry low or hang dry. Do not iron the decorative parts.
When will my order arrive?
Orders ship within 1–3 business days and arrive in 7–15 business days. You'll receive a tracking link by email as soon as your order ships. Free US shipping on orders over $50.
What if it doesn't fit?
No worries — you have 30 days to return or exchange unworn items, for free. Just contact us and we'll help you find the right size.
Still have a question? Contact us
