If you’re decorating or selling baby onesies, you might be wondering if using the term “onesie” is legally safe. It’s everywhere, from product listings to social media captions, but is it actually okay to use?
Here’s everything you need to know about the trademark status of “onesie,” plus top baby bodysuit styles, sizing info, and product recommendations perfect for resale or printing.
Is Onesie a Trademarked?
Yes, ONESIES® is a registered trademark owned by Gerber Childrenswear LLC in the United States. That means the term refers specifically to their brand of infant bodysuits.
However, much like “Kleenex” for tissues or “Band-Aid” for adhesive bandages, the term onesie has become so widely used in everyday language that many people use it to describe any blank baby bodysuit.
If you’re a seller or decorator, it’s best to use alternatives like:
- Baby bodysuit
- Infant one-piece
- Baby one-piece garment
These are more neutral terms that help you stay on the safe side legally, especially when selling on platforms like Etsy, Amazon, or your own website.
Who Owns the Trademark?
The trademark ONESIES® is owned by Gerber Childrenswear LLC, a well-known U.S. brand that has long produced baby essentials. While they legally own the term, Gerber isn’t known for enforcing the trademark aggressively among everyday users or small businesses.
Still, for anyone operating a commercial baby apparel business, it’s smart to avoid using onesie trademarked terms in your product titles or branding—just in case.
What Is a Baby Onesie, Technically?
A baby onesie (or bodysuit) is a one-piece baby garment that usually has:
- Snap closures at the crotch
- Short or long sleeves
- A stretchy, comfortable neckline
- A soft, breathable material like cotton, polyester, or a blend
These garments are designed to keep babies cozy and make diaper changes quick. They’re worn as a base layer or on their own, and they’re one of the most popular blank garments for decoration.
Popular Styles of Baby Onesies for Customization
Whether you’re screen printing, sublimating, or embroidering, these onesie styles are ideal for adding your own designs:
Common Onesie Styles
- Classic Short/Long Sleeve – The everyday essential
- Kimono Style – Wrap-front with side snaps
- Bubble Rompers – Loose and playful (2025 trend!)
- Raglan Sleeve – Sporty, baseball-style
- Flutter & Ruffle Sleeves – Perfect for baby girl outfits
- Crew Neck – Simple, tee-style neckline
- Envelope/Lap Shoulder – Easy over the head
These variations offer decorators flexibility in both aesthetic and function.
Most Common Baby Onesie Sizes
Here’s a breakdown of the most frequently sold sizes:
- Preemie
- Newborn
- 0–3 Months
- 3–6 Months
- 6–12 Months
- 12–18 Months
Offering this range ensures you can meet the needs of new parents and gift shoppers alike.
Best Baby Bodysuits to Buy for Printing or Resale
Looking for the best blank bodysuits to stock up on? Here are the top-rated picks that decorators love:
- The Laughing Giraffe® 100% Cotton Bodysuits – Soft, durable, and print-friendly
- The Laughing Giraffe® Luxe Poly-Cotton Blend – Excellent for embroidery
- The Laughing Giraffe® 100% Polyester Bodysuits – Sublimation-ready
- Moon and Back by Hanna Andersson – Organic cotton and great quality
- Hanes Baby Flexy Short Sleeve 5-Pack – Stretchy and affordable
- Hudson Baby Long Sleeve Cotton Bodysuits – Cozy and classic
- Gerber Unisex Short Sleeve Onesies 8-Pack – A household favorite
Pro Tip: The Laughing Giraffe® line is a go-to for decorators due to consistent sizing, quality fabrics, and excellent results with DTG, sublimation, screen printing, or applique.
Final Takeaway: Should You Say “Onesie”?
If you’re decorating or selling baby clothing, you’ll probably hear and say “onesie” plenty of times—but it’s smart to use alternative terms like “baby bodysuit” in your listings and branding. It keeps your business professional and avoids any potential onesie trademarked headaches.
And when it comes to choosing the best blank baby onesies? Go for soft, breathable fabrics, trusted brands, and styles that are easy to customize and comfortable for little ones to wear.