Baby Pajamas
| US Size |
Age |
Weight (lbs) |
Height (in) |
Chest (in) |
| Newborn (NB) |
0–3 M |
5–8 |
17–21 |
15–16 |
| 0–3 M |
3 M |
8–12 |
21–24 |
16–17 |
| 3–6 M |
6 M |
12–17 |
24–27 |
17–18 |
| 6–9 M |
9 M |
17–21 |
27–29 |
18–19 |
| 9–12 M |
12 M |
21–24 |
29–31 |
19–20 |
| 12–18 M |
18 M |
24–28 |
31–33 |
20–21 |
| 18–24 M |
24 M |
28–30 |
33–35 |
21–22 |
| 2T |
2 Y |
30–32 |
35–37 |
22–23 |
| 3T |
3 Y |
32–36 |
37–39 |
23–24 |
Baby Sleep Sacks
| US Size |
Age |
Weight (lbs) |
Height (in) |
Sack Length (in) |
| Newborn (NB) |
0–3 M |
5–8 |
17–21 |
23–25 |
| 0–3 M |
3–6 M |
8–12 |
21–24 |
25–27 |
| 3–6 M |
6–9 M |
12–17 |
24–27 |
27–29 |
| 6–12 M |
9–12 M |
17–21 |
27–29 |
29–31 |
| 12–18 M |
12–18 M |
21–24 |
29–31 |
31–33 |
| 18–24 M |
18–24 M |
24–28 |
31–33 |
33–35 |
| 2T |
2–3 Y |
28–32 |
33–36 |
35–37 |
How to Measure & Fit Tips
| Measurement |
How to Measure |
| Weight |
Weigh your baby undressed on a digital scale. Use weight first when picking a size. |
| Height |
Lay your baby flat, stretch the legs gently, and measure from the top of the head to the heel. |
| Chest |
Measure around the fullest part of the chest, just under the armpits, keeping the tape snug but not tight. |
| Sack Length |
For sleep sacks, measure from the top of the shoulder down to the bottom hem while the baby is lying flat. |
* All measurements are in inches. Measure over light clothing for accuracy.
* If your baby is between sizes, we recommend sizing up for extra growing room.
* Sleep sacks should fit snugly around the chest and armpits, with no loose fabric near the face — never allow the baby to slip down inside.
* Footed pajamas are designed to fit snugly for safety and comfort; actual fit may vary slightly by fabric stretch and style.
