SIZE GUIDE

Measure, do not guess

Every onesie is cut with room at the legs and hips to fit over a diaper. Stay with the measured size.

SIZE AGE HEIGHT WEIGHT
0–3M Newborn – 3 months 20–24 in 8–12 lb
3–6M 3 – 6 months 24–26 in 12–17 lb
6–12M 6 – 12 months 26–29 in 17–22 lb
12–18M 12 – 18 months 29–32 in 22–27 lb
18–24M 18 – 24 months 32–34 in 27–30 lb
2T 2 years 34–36 in 30–33 lb
3T 3 years 36–39 in 33–36 lb
4T 4 years 39–42 in 36–40 lb

Measure your child rather than going by age. If they fall between two sizes, take the larger one — the fleece does not shrink, but babies grow fast.