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Size Chart

 

Example 

We recommend you size up! Our onesies fit snug for safe crawling.

SIZE WEIGHT HEIGHT
Preemie up to 6 lbs / up to 2.7 kg up to 17 in. / up to 43 cm
Newborn 6-9 lbs (9M)/ 2.7-4.1 kg up to 21.5 in. / up to 55 cm
0-3 months (3M) 9-12.5 lbs / 4.1 - 5.7 kg 21.5 - 24 in. / 55 - 61 cm
3-6 months (6M) 12.5 - 17 lbs / 5.7 - 7.7 kg 24 - 26.5 in. / 61 - 67 cm
6-9 months (9M) 17 - 21 lbs / 7.7 - 9.5 kg up to 28.5 in. / up to 72 cm
12 months 21 to 25 lbs / 9.5 -11.3 kg 28.5 to 30.5 in. / 72 to 78 cm
18 months 25- 28 lbs / 11.3 - 12.7 kg 30.5 to 32.5 in. / 78 - 83 cm
24 months 28 - 30 lbs / 12.7 - 13.6 kg 32.5 to 34 in. / 83 - 86 cm