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Baby in a Baby Boy Christening Romper with a gold cross, surrounded by soft lighting
Close-up of a baby Baby Boy Christening Romper in white blankets and socks on a white background
Newborn baby wrapped in Baby Boy Christening Romper with blurred lights in the background
Newborn baby wrapped in Baby Boy Christening Romper with a soft glow in the background

MASON Baby Boy Christening Romper Set

Size:
Size Guide

⭐ Battesimo Size Guide (0–24 Months)

Accurate measurements = perfect fit for your little one.

We recommend measuring your baby rather than choosing by age — every child grows at their own pace.

🧵 How to Measure Your Baby

1. Height

Measure from the top of the head to the heel (no pointed toes).

2. Chest

Measure under the arms around the fullest part of the chest.

3. Front to Crotch

(For rompers, onesies & suits)
Measure from the front collar down to the bottom of the crotch.

4. Foot Length

Useful for choosing booties.

5. Head Circumference

Measure around the widest part of the head.

📏 Battesimo Size Chart (0–24 Months)

All measurements are in cm / inches.

AGE / SIZE Height (cm / in) Chest (cm / in) Front to crotch (cm / in) Foot Length (cm / in) Head Circumference (cm / in)
Premie 2–3 kg 44–48 / 17–19 34–36 / 13–14 32 / 12.5 7 / 2.8 34–36 / 13–14
Premie 3–4 kg 48–52 / 19–20.5 36–38 / 14–15 34 / 13.5 8 / 3.2 36–38 / 14–15
Newborn 52–56 / 20.5–22 38–40 / 15–15.8 36 / 14.2 9 / 3.5 38–40 / 15–15.8
0–3 months 56–62 / 22–24 40–42 / 15.8–16.5 37 / 14.6 9 / 3.5 36–40 / 14.2–15.8
3–6 months 62–68 / 24–27 42–46 / 16.5–18 40 / 15.8 10 / 3.9 40–42 / 15.8–16.5
6–9 months 68–74 / 27–29 46–49 / 18–19.3 42 / 16.5 11 / 4.3 42–44 / 16.5–17
9–12 months 74–80 / 29–31.5 49–51 / 19.3–20 44 / 17 12 / 4.7 44–46 / 17–18
12–18 months 80–86 / 31.5–34 51–53 / 20–21 46 / 18 12.5 / 5 46–50 / 18–20
18–24 months 86–90 / 34–35.5 53–54 / 21–21.3 48 / 19 13 / 5.2 50–52 / 20–20.5
2 years 90–92 / 35.5–37 54–55 / 21.3–21.7 50 / 20 13.5 / 5.4 52–54 / 20.5–21.3

 

❤️ Helpful Notes

✔ For gowns & dresses

Height + chest are enough.

✔ For rompers & suits

Height + chest + front-to-crotch are needed.

✔ If your baby is between sizes

Choose the larger size for comfort.

✔ Still unsure?

Send your baby’s measurements to our WhatsApp: +1 (437) 452-7002
We will recommend the perfect size.

Size
Color:

Color
Set Options:

Set Options
Sale price$99.00

OEKO-TEX Materials

Personalization available

Need help planning the ceremony? Read our baptism checklist, outfit guide and planning tips.

Includes MASON Romper and matching beanie.
Crafted from 100% cotton jersey.
Handmade with attention to comfort and ease of use.
Machine washable at 30°C.
Suitable for baby boys.

Need help or custom sizing?
Contact us on +14374527002
Baby in a Baby Boy Christening Romper with a gold cross, surrounded by soft lighting
MASON Baby Boy Christening Romper Set Sale price$99.00

Loved by 24,000+ families worldwide 🤍

Customers rate us 4.9/5 based on 4453 reviews.

Not sure which color to choose?

  • White — pure bright white
  • Ivory — soft warm tone

White

Ivory

Use the left and right arrow keys to navigate between before and after photos.

BATTESIMO

Handcrafted in Atelier

20+ years of craftsmanship

Personalization available

Add name, date, or special details

Custom sizing available

Made to your baby’s measurements

Handcrafted with care

Each piece is made with attention to detail

Designed for generations

Gentle and comfortable for delicate skin