Your Scalable Partner for Premium Custom Baby Onesies Manufacturing​

Select Your Custom Baby Onesies Style

Long Sleeve Onesie

Long Sleeve Onesie

Sleeveless Bodysuit

Sleeveless Bodysuit

Footed Onesie

Footed Onesie

Kimono-Style Wrap Onesie

Kimono-Style Wrap Onesie

Special Custom Baby Onesies Finishing Techniques

Soft-Hand Printing1

Soft-Hand Printing2

Soft-Hand Printing3

Water-Based Inks1

Water-Based Inks2

Water-Based Inks3

Discharge Printing1

Discharge Printing2

Discharge Printing3

High-Density Printing1

High-Density Printing2

High-Density Printing3

Safety Features Built into Every Baby Onesie

Nickel-Free Snaps

Stops allergic reactions with top-quality stainless steel or plastic snaps that have no nickel.

Flat Seams

Prevents irritation on sensitive skin by eliminating raised edges that can rub or chafe.

Pull-Tested Closures

Ensures snaps and zippers stay secure through rigorous testing. Exceeds international safety standards.

CPSIA Compliant

Meets all US safety rules for kids’ sleepwear. Each part and chemical is tested thoroughly.

Custom Baby Onesies Packaging Solutions


  • Garment Hangtags: These special tags show sizing, fabric content, and care instructions. They also boost brand identity.
  • Eco-Friendly Wrapping: Use sustainable tissue and paper. These options fit the values of eco-conscious parents.
  • Ribbon and Bow Finishing: This gift-ready look adds a premium touch and supports higher prices.
  • Custom Stickers and Seals: They give your products a final branded touch. This boosts security and shows authenticity.
Custom Baby Onesies Packaging Solutions


Custom Baby Onesies supplier

Why choose our custom baby onesies?

We use only the softest, highest-quality fabrics. Maintain their shape and softness after repeated washing.

All our products meet or exceed safety standards with non-toxic inks and lead-free snaps.

Our intuitive design studio makes it simple to create perfect personalized onesies.

Scale from small batches to thousands of units.

FAQs About Custom Baby Onesies Supplier

How small or complex can my custom baby onesie design be?​

LeelineApparel accommodates intricate details like fine lettering down to 0.25 inches, subtle gradient prints, and dense embroidery with 50,000+ stitches. For screen printing, we recommend minimum stroke widths of 0.5mm. 

What fabric weight and GSM options are available for custom baby onesies?​

We offer four certified fabric weights optimized for infant comfort:

  • Featherlight 100% combed cotton (140 GSM) for summer
  • Midweight cotton-poly blends (160 GSM) for year-round wear
  • Double-brushed organic cotton (180 GSM) for premium softness
  • Thermal knit (200 GSM) for winter styles
Can LeelineApparel add functional features like reinforced knees or convertible sleeves?

Yes, technical modifications are feasible at MOQ 50 units.

Our specialty sewing lines offer:

  • Snap-extended shoulders for easy dressing
  • Knee padding with breathable foam inserts
  • Foldover scratch mittens with elastic binding
  • Dual-direction zippers for quick diaper changes
Can I mix multiple designs within one baby onesie production order?​

Design mixing is available with a 24-unit minimum per SKU. Our automated cutting systems track up to 20 unique designs per production batch. Digital printing queues manage unlimited design variations.