Size Guide — Children

Find the perfect fit for your child. Weight and chest measurements are essential for size choice.

The garment sizes a little small. When in doubt between two sizes, always choose the larger one. Weight is the most important criterion — choose the biggest size in which your child reaches the minimum weight.

Size	Age	Weight	Chest	Height (ref.)
1-2 yrs	12–24 months	22–31 lbs	19–20 in	30–34 in
3 yrs	3 years	26–37 lbs	20–21 in	34–38 in
4 yrs	4 years	31–42 lbs	21–22 in	38–41 in
5 yrs	5 years	35–49 lbs	22–23 in	41–44 in
6 yrs	6 years	40–55 lbs	23–24 in	44–47 in

How to Measure

Weight Weigh your child without clothes. This is the most important measurement for choosing the right size.

Chest Measure around the fullest part of the chest, under the arms. Keep the tape snug but not tight.

Height Measure standing straight against a wall. Height is a reference only — weight and chest take priority.

Between sizes? Always go with the larger size. The inflatable part is one-size-fits-all (22–55 lbs), only the T-shirt changes.

Good news: The inflatable part is one-size-fits-all (ages 1–6, 22–55 lbs). As your child grows, you only need to replace the T-shirt — not the inflatable. A spare T-shirt ($99) lets you change size, color, or sleeve length.

Available options:
Colors: Yellow, Red, Orange, Pink, Green
Sleeves: Short or Long

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