Brand vs brand

Cloud Island vs Nike sizes

Of Cloud Island's 8 baby and toddler sizes, 0 line up closely with a Nike size, 7 are partial matches, and 1 has no clean match. Both charts list weight and height, so the comparison uses both.

Watch the labels: Cloud Island 12M is closer to Nike 9M than to Nike's own 12M; Cloud Island 18M is closer to Nike 12M than to Nike's own 18M; Cloud Island 24M is closer to Nike 18M than to Nike's own 24M.

Cloud Island True to sizeNike Runs large

Based on published size charts compared with other brands.

Size by size, on one scale

Each block is one size, placed where the brand's chart puts it. Blocks that sit above each other fit the same baby.

Weight (lb)

Cloud Island

Preemie: up to 5.5 lb
Newborn: 6 to 8.5 lb
0-3M: 9 to 12 lb
3-6M: 12.5 to 16 lb
6-9M: 16.5 to 19.5 lb
12M: 20 to 23 lb
18M: 23.5 to 26 lb
24M: 26.5 to 28 lb

Nike

Newborn/0-3M: 6 to 9.5 lb
3M: 9.9 to 14.6 lb
6M: 15 to 17.9 lb
9M: 18.3 to 22 lb
12M: 22.5 to 24.9 lb
18M: 25.6 to 28 lb
24M: 28.4 to 30 lb
2T: 28.4 to 30 lb
3T: 30.4 to 33.1 lb
4T: 34 to 37.9 lb

Height (in)

Cloud Island

Preemie: up to 17.5 in
Newborn: 18 to 20 in
0-3M: 20.5 to 23.5 in
3-6M: 24 to 25.5 in
6-9M: 26 to 27.5 in
12M: 28 to 30.5 in
18M: 31 to 32.5 in
24M: 33 to 35.5 in

Nike

Newborn/0-3M: 19.7 to 22 in
3M: 22 to 24.4 in
6M: 24.4 to 26.8 in
9M: 26.8 to 29.1 in
12M: 29.1 to 31.5 in
18M: 31.5 to 33.9 in
24M: 33.9 to 36.2 in
2T: 33.9 to 36.2 in
3T: 36.2 to 38.6 in
4T: 38.6 to 40.9 in

Cloud Island size to Nike size

Cloud Island	Closest Nike	Match	Weight: Cloud Island / Nike	Height: Cloud Island / Nike
Preemie	None	No clean match	up to 5.5 lb / n/a	up to 17.5 in / n/a
Newborn	Newborn/0-3M	Partial	6 to 8.5 lb / 6 to 9.5 lb	18 to 20 in / 19.7 to 22 in
0-3M	3M	Partial	9 to 12 lb / 9.9 to 14.6 lb	20.5 to 23.5 in / 22 to 24.4 in
3-6M	6M	Partial	12.5 to 16 lb / 15 to 17.9 lb	24 to 25.5 in / 24.4 to 26.8 in
6-9M	6M	Partial	16.5 to 19.5 lb / 15 to 17.9 lb	26 to 27.5 in / 24.4 to 26.8 in
12M	9M	Partial	20 to 23 lb / 18.3 to 22 lb	28 to 30.5 in / 26.8 to 29.1 in
18M	12M	Partial	23.5 to 26 lb / 22.5 to 24.9 lb	31 to 32.5 in / 29.1 to 31.5 in
24M	18M	Partial	26.5 to 28 lb / 25.6 to 28 lb	33 to 35.5 in / 31.5 to 33.9 in

Nike size to Cloud Island size

Nike	Closest Cloud Island	Match	Weight: Nike / Cloud Island	Height: Nike / Cloud Island
Newborn/0-3M	Newborn	Partial	6 to 9.5 lb / 6 to 8.5 lb	19.7 to 22 in / 18 to 20 in
3M	0-3M	Partial	9.9 to 14.6 lb / 9 to 12 lb	22 to 24.4 in / 20.5 to 23.5 in
6M	3-6M	Partial	15 to 17.9 lb / 12.5 to 16 lb	24.4 to 26.8 in / 24 to 25.5 in
9M	12M	Partial	18.3 to 22 lb / 20 to 23 lb	26.8 to 29.1 in / 28 to 30.5 in
12M	18M	Partial	22.5 to 24.9 lb / 23.5 to 26 lb	29.1 to 31.5 in / 31 to 32.5 in
18M	24M	Partial	25.6 to 28 lb / 26.5 to 28 lb	31.5 to 33.9 in / 33 to 35.5 in
24M	24M	Partial	28.4 to 30 lb / 26.5 to 28 lb	33.9 to 36.2 in / 33 to 35.5 in
2T	24M	Partial	28.4 to 30 lb / 26.5 to 28 lb	33.9 to 36.2 in / 33 to 35.5 in
3T	None	No clean match	30.4 to 33.1 lb / n/a	36.2 to 38.6 in / n/a
4T	None	No clean match	34 to 37.9 lb / n/a	38.6 to 40.9 in / n/a

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Every Cloud Island size in Nike

No clean match

Cloud Island Preemie has no clean match in Nike. The published ranges do not overlap.

The shaded column is the Cloud Island range. Bars show what each brand publishes for the size.

Based on published size charts. Cloud Island chart and Nike chart.

More comparisons

Charts retrieved October 4, 2026 (Cloud Island) and October 4, 2026 (Nike). Sources are listed on each brand page. This site is not affiliated with either brand.