Boys' Formal Baby Romper for 100-Day Party and First Birthday
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Product description
Formal Boys' Baby RomperA formal look that makes your son the star of his party
Want your party photos to look polished? This one-piece boys' baby romper comes with a polo collar, a bow tie or a necktie, for your little one to wear at his 100-day party or first birthday. Sizes range from 59cm to 100cm.
Choose the look
Polo collar
In navy or dark grey, including a long-sleeve dark grey polo for autumn days.
Bow tie and little lion
A playful touch on a formal look, with a version among the autumn designs.
100-day party design
Named after the occasion itself.
Measurements in centimeters for each size
- Size 59
- Length 48 cm · Half chest width 24 cm · Shoulder to crotch 36 cm
- Size 66
- Length 53 cm · Half chest width 26 cm · Shoulder to crotch 37 cm
- Size 73
- Length 58 cm · Half chest width 27 cm · Shoulder to crotch 39 cm
- Size 80
- Length 63 cm · Half chest width 29 cm · Shoulder to crotch 42 cm
- Size 90
- Length 68 cm · Half chest width 30 cm · Shoulder to crotch 46 cm
- Size 100
- Length 73 cm · Half chest width 32 cm · Shoulder to crotch 49 cm

Here's how to choose your baby's size

Romper Details
- Type
- One-piece romper for boys
- Occasion
- 100-day party, first birthday
- Season
- Summer and autumn designs
- Listed colors
- Navy, grey, dark grey
- Sizes
- 59cm, 66cm, 73cm, 80cm, 90cm, 100cm
- Care
- No prolonged soaking; separate dark colors from light ones
The chart is an approximate guide
Any age, height or weight mentioned with a size is for guidance only, as every child is different.
Before choosing a design
What size is right for my baby, and how do I choose it?
Compare your baby's height with the size chart, noting that measurements were taken with the garment laid flat.
What's the difference between the summer and autumn designs?
The difference is the season, and sleeve length is only stated in some options. The summer navy preppy style has short sleeves, while the autumn dark grey and grey preppy styles have long sleeves.
Which design suits a 100-day party?
The 100-day party design is the best match for the occasion among the baby clothes on this page, and it comes in both a summer and an autumn version.
How do I wash the romper?
Wash it without prolonged soaking, and don't mix dark and light colors in the same wash.
And if Dad wants to match his son's preppy style, we have a Men's V-Neck Wool Sweater, and for Mom after the party day, a Women's Bear Print Pajamas.
Get your son ready for his party
Choose the design and size that suit your baby, and add the romper to your cart.
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