Construction Crew Number One Baby Onesie® | 1st Birthday
Baby & Infant Size Chart
Infant Shirt
| 6M | 12M | 18M | |
|---|---|---|---|
| Length | 12½ in | 13 in | 13½ in |
| Width | 9¾ in | 10¼ in | 10¾ in |
| Sleeve | 3¼ in | 3½ in | 3¾ in |
All measurements in inches • Measurements may vary ±1"
Short & Long-Sleeve Baby Bodysuit
| 0-3M | 3-6M | 6-9M | 12M | |
|---|---|---|---|---|
| Weight | 8–12 lbs / 3.6–5.4 kg | 12–16 lbs / 5.4–7.3 kg | 16–20 lbs / 7.3–9.1 kg | 20–24 lbs / 9.1–10.9 kg |
| Height | 21–24 in / 53.3–61 cm | 24–26 in / 61–66 cm | 26–28 in / 66–71.1 cm | 28–30 in / 71.1–76.2 cm |
on All US Orders
We offer free standard shipping on every US order — no minimum required. Your tee will be carefully packaged and on its way!
Returns
Not in love with your tee? No problem. Returns accepted within 30 days of delivery — unworn and unwashed. Learn more.
In-House Printing
Every Okum Tees shirt is printed in-house using eco-friendly inks. Quality you can feel good about — inside and out.
Big milestones deserve a big rig! This cheerful design pairs a bold number 1 with a hardworking dump truck, a bright traffic cone, and a couple of spinning gears, all rendered in playful cartoon style and dressed up in construction-site yellow. It's the perfect way to mark a first birthday for any little one who's already busy building, hauling, and knocking things down around the house.
Whether it's for the big birthday photos or just a fun everyday romper, this Okum Tees onesie® brings construction party energy to a soft, comfy baby staple. Easy snaps make diaper changes simple, so the birthday star can keep right on crawling toward cake time.
Makes a great gift for:
- A first birthday gift for a little future builder or truck lover
- The perfect outfit for a construction or dump truck themed birthday party
- A sweet baby shower gift for parents planning a 1st birthday bash
Product details:
- Material: Soft, lightweight cotton — gentle on baby skin and easy to wash
- Fit: True to size infant fit — see size guide for measurements
- Colors available: White, Grey, Natural
- Care: Machine wash cold, tumble dry low
Our ONESIES® are made from 100% cotton interlock knit, in white, natural, and heather grey. The natural fabric fits true to size, while the white tends to run slightly small. Our shirts and sweatshirts are crafted from cotton or cotton blends, depending on the brand. When in doubt, sizing up is a safe bet.
All of our items are printed using inks that meet CPSIA safety standards and are gentle on sensitive skin.
We’re proud to source our materials from manufacturers that prioritize ethical production and fair working conditions.
To learn more about CPSIA standards, visit: https://www.cpsc.gov
ONESIE® is a registered trademark of Gerber Childrenswear LLC.
