Skip to product information
 Rated 4.8/5 (10,000+ Verified Customers)

Lumio Baby Bat Romper

Lumio Baby Bat Romper

🦇 Attached Bat Wings

👶 Soft Hood with Bat Ears

🎃 Easy One-Piece Outfit

  • Free Shipping
  • 30 Day Guarantee
  • 24/7 Support
📏 Baby Size Guide

For the best fit, choose a size using your baby's current height and weight rather than age alone.

Recommended size

Size Baby height Baby weight
0–3M52–59 cm / 20.5–23.2 in3–5 kg / 6.6–11 lb
3–6M59–66 cm / 23.2–26 in5–7 kg / 11–15.4 lb
6–9M66–73 cm / 26–28.7 in7–9 kg / 15.4–19.8 lb
9–12M73–80 cm / 28.7–31.5 in9–11 kg / 19.8–24.3 lb
12–18M80–85 cm / 31.5–33.5 in11–13 kg / 24.3–28.7 lb

Costume measurements

Size Length Chest Sleeve
0–3M48 cm48 cm23 cm
3–6M51 cm50 cm24 cm
6–9M54 cm52 cm25 cm
9–12M58 cm54 cm26 cm
12–18M62 cm56 cm27 cm

Between sizes? We recommend choosing the larger size for a more comfortable fit.

Our Guarantee

If you're not 100% satisfied within the first 60 days, just send it back to us and we'll give you a full refund.

No need to worry about the return shipping - we've got you covered!

Shipping & Delivery

We process orders within 24-72 hours and deliver them within 5-8 days depending on your location, with tracked shipment included for your convenience.

Update: We recently went viral on social media and our stock is very limited! We highly recommend ordering now before we sell out.
View full details

Lumio Baby Bat Romper

Regular price $34.99
Regular price $34.99 Sale price
Save Sold out

Make Their First Halloween Unforgettable 🦇

Cozy, cute, and costume-ready — the Lumio Baby Bat Romper is designed for little ones who are ready to steal the show. Featuring an attached bat-wing design, soft hood with playful bat ears, and an easy one-piece fit, it's perfect for family gatherings, seasonal photos, and trick-or-treat adventures. Available in sizes 0–18 months.

  • Adorable Bat Wings

    Attached wing design that stays in place — no fussing, just cuteness.

  • Cozy Hood & Ears

    Soft hood with playful bat ears keeps little heads warm and photo-ready.

  • Easy One-Piece

    Slip-on romper design makes dressing (and undressing) a breeze for busy parents.

The Cutest Gift for Baby's First Halloween 🎃

Looking for a gift that'll melt every heart in the room? The Lumio Baby Bat Romper makes the sweetest present for new parents. Soft, safe, and seriously adorable — it's the kind of outfit that ends up in the baby album forever. Gift-ready and available in 5 sizes from 0 to 18 months.

30-Money-Back Guarantee!

We stand by our products with a 30-day risk-free guarantee. If you're not completely thrilled with your order, simply return it for a full refund (no questions asked)

  • Absolutely obsessed with this romper! My daughter wore it for her first Halloween and we got so many compliments. The bat ears on the hood are the cutest thing I've ever seen. Sizing was spot on for her 4-month-old frame.

    Jessica M. · Mom of 1 · Verified Buyer

  • Bought this as a gift for my sister's baby shower and she loved it! Great quality fabric, super soft, and the wings actually stay attached. Already planning to order another one for our nephew.

    Ryan T. · Verified Buyer

  • Perfect Halloween costume for a baby — easy to put on, easy to take off, and my son was comfortable in it all day. The photos came out amazing. Will definitely be buying from Lumio Kids again!

    Priya K. · Mom of 2 · Verified Buyer

1 of 3

Frequently Asked Questions

Frequently Asked Questions

What sizes are available?

The Lumio Baby Bat Romper is available in five sizes: 0-3M, 3-6M, 6-9M, 9-12M, and 12-18M. We recommend checking our size guide above for measurements to find the perfect fit for your little one.

Is this safe for my baby to sleep in?

This costume is intended for supervised daytime wear only and is not designed for sleep. Please follow all care label instructions and ensure your baby is supervised while wearing the costume.

How do I care for the romper?

We recommend machine washing on a gentle cold cycle and laying flat to dry to preserve the shape of the bat wings and hood. Avoid tumble drying or ironing directly on the costume details.

Can I use this as a gift?

Absolutely! The Lumio Baby Bat Romper makes a wonderful gift for baby showers, first Halloweens, and seasonal celebrations. It arrives ready to gift and is sure to delight any new parent.

What is your return policy?

We want you to love your purchase. If you're not completely satisfied, please contact us within 30 days of delivery and we'll make it right. Items must be unworn and in original condition to be eligible for a return.

How do I get in contact?

You can message support by clicking the "Contact Us" section on our store.