Is the size chart below helpful?Yes | No

NewbornNewbornup to 19"up to 9 lbs
3m0-3mup to 23"up to 13 lbs
6m3-6m23"-26"13-16 lbs
9m6-9m26-27"16-19 lbs
12m9-12m27-29"19-22 lbs
18m12-18m29"-31"22-25 lbs
24m18-24m31"-33"25-29 lbs
2T33”-36”26-30 lbs21”20"21”
3T36”-38”30-34 lbs22"21"22"
4T38”-40”34-38 lbs23"22"23"
Kids440”-42”36-40 lbs23"21"23"
542”-45”40-44 lbs24"21.5"24"
645”-47”44-48 lbs25"22"25"
6x46”-49”47-53 lbs26.5"22.5"26.5"
748”-51”52-60 lbs27”23”27”
851”-53”60-69 lbs29”23.5”29”
1054”-56”69-83 lbs30”24”30”
1257”-59”83-89 lbs31.5”25”31.5”
1458”-61”84-97 lbs32"26”32"
1662”-63”98-110 lbs34"27”34"
1458”-61”84-97 lbs32"26”32"
1662”-63”98-110 lbs34"27”34"

how to measure

Measure around the fullest part of the chest, keeping the measuring tape up under the arms and around the shoulder blades.
Measure around the waist (not over pants) at your child’s natural waistline.
hips/diapered seat:
Stand with heels together and measure around the fullest part of child’s hips. For diapered babies, measure around the fullest part of the diapered seat.