Brand vs brand

Wonder Nation vs Cloud Island sizes

Of Wonder Nation's 11 baby and toddler sizes, 3 line up closely with a Cloud Island size, 6 are partial matches, and 2 have no clean match. Both charts list weight and height, so the comparison uses both.

Closest pairs: Wonder Nation 0-3M = Cloud Island 0-3M, Wonder Nation 3-6M = Cloud Island 3-6M, Wonder Nation 6-9M = Cloud Island 6-9M.

Watch the labels: Wonder Nation Preemie is closer to Cloud Island Preemie than to Cloud Island's own Preemie; Wonder Nation Newborn is closer to Cloud Island Newborn than to Cloud Island's own Newborn.

Wonder Nation Runs smallCloud Island True to size

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)

Wonder Nation

Preemie: up to 5 lb
Newborn: 5.5 to 7.5 lb
0-3M: 6.5 to 12 lb
3-6M: 12.5 to 16 lb
6-9M: 16.5 to 19 lb
12M: 19.5 to 22 lb
18M: 22.5 to 26 lb
24M: 26.5 to 30 lb
2T: 26.5 to 30 lb
3T: 30.5 to 34 lb
4T: 34.5 to 38 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

Height (in)

Wonder Nation

Preemie: up to 17 in
Newborn: 17.5 to 21 in
0-3M: 20.5 to 23 in
3-6M: 23.5 to 26 in
6-9M: 26.5 to 27.5 in
12M: 28 to 29.5 in
18M: 30 to 31.5 in
24M: 32 to 33.5 in
2T: 32 to 33.5 in
3T: 34 to 37.5 in
4T: 38 to 41.5 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

Wonder Nation size to Cloud Island size

Wonder Nation	Closest Cloud Island	Match	Weight: Wonder Nation / Cloud Island	Height: Wonder Nation / Cloud Island
Preemie	Preemie	Partial	up to 5 lb / up to 5.5 lb	up to 17 in / up to 17.5 in
Newborn	Newborn	Partial	5.5 to 7.5 lb / 6 to 8.5 lb	17.5 to 21 in / 18 to 20 in
0-3M	0-3M	Close match	6.5 to 12 lb / 9 to 12 lb	20.5 to 23 in / 20.5 to 23.5 in
3-6M	3-6M	Close match	12.5 to 16 lb / 12.5 to 16 lb	23.5 to 26 in / 24 to 25.5 in
6-9M	6-9M	Close match	16.5 to 19 lb / 16.5 to 19.5 lb	26.5 to 27.5 in / 26 to 27.5 in
12M	12M	Partial	19.5 to 22 lb / 20 to 23 lb	28 to 29.5 in / 28 to 30.5 in
18M	18M	Partial	22.5 to 26 lb / 23.5 to 26 lb	30 to 31.5 in / 31 to 32.5 in
24M	24M	Partial	26.5 to 30 lb / 26.5 to 28 lb	32 to 33.5 in / 33 to 35.5 in
2T	24M	Partial	26.5 to 30 lb / 26.5 to 28 lb	32 to 33.5 in / 33 to 35.5 in
3T	24M	No clean match	30.5 to 34 lb / 26.5 to 28 lb	34 to 37.5 in / 33 to 35.5 in
4T	None	No clean match	34.5 to 38 lb / n/a	38 to 41.5 in / n/a

Cloud Island size to Wonder Nation size

Cloud Island	Closest Wonder Nation	Match	Weight: Cloud Island / Wonder Nation	Height: Cloud Island / Wonder Nation
Preemie	Preemie	Partial	up to 5.5 lb / up to 5 lb	up to 17.5 in / up to 17 in
Newborn	Newborn	Partial	6 to 8.5 lb / 5.5 to 7.5 lb	18 to 20 in / 17.5 to 21 in
0-3M	0-3M	Close match	9 to 12 lb / 6.5 to 12 lb	20.5 to 23.5 in / 20.5 to 23 in
3-6M	3-6M	Close match	12.5 to 16 lb / 12.5 to 16 lb	24 to 25.5 in / 23.5 to 26 in
6-9M	6-9M	Close match	16.5 to 19.5 lb / 16.5 to 19 lb	26 to 27.5 in / 26.5 to 27.5 in
12M	12M	Partial	20 to 23 lb / 19.5 to 22 lb	28 to 30.5 in / 28 to 29.5 in
18M	18M	Partial	23.5 to 26 lb / 22.5 to 26 lb	31 to 32.5 in / 30 to 31.5 in
24M	24M	Partial	26.5 to 28 lb / 26.5 to 30 lb	33 to 35.5 in / 32 to 33.5 in

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Every Wonder Nation size in Cloud Island

Close match

Wonder Nation 0-3M lines up closely with Cloud Island 0-3M.

Weight (lb)

Wonder Nation 0-3M 6.5 to 12 lb

Cloud Island Newborn 6 to 8.5 lb

Cloud Island 0-3M 9 to 12 lb

Height (in)

Wonder Nation 0-3M 20.5 to 23 in

Cloud Island Newborn 18 to 20 in

Cloud Island 0-3M 20.5 to 23.5 in

The shaded column is the Wonder Nation range. Bars show what each brand publishes for the size.

Based on published size charts. Wonder Nation chart and Cloud Island chart.

More comparisons

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