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Nature baby size guides

All babies come in different shapes and sizes and this is intended to be a guide only. While we do our best to ensure all our sizing is consistent, you may find that some styles will vary in size due to different fabric qualities.

Our size guide reflects the maximum measurements for each age.

Clothing Size Guide
Clothing Weight (KG) Height (CM) Chest (CM) Waist (CM)
prem350
newborn456
0-3 months662
3-6 months868
6-12 months1076
1 year1284
2 year925654
3 year1005855
4 year1086056
5 year1156257
Hats & Beanies Size Guide

All babies come in different shapes and sizes and this is intended to be a guide. While we do our best to ensure all our sizing is consistent, you may find that some styles will vary in size.

All measurements are in centimeters.

Knotted Beanies Newborn 0–6M 6–12M
Circumference (cm) 32–35 35–43 43–46
Cotton Knit Beanies Small Medium Large
Circumference (cm) 37–43 43–48 48–53
Merino Knit Beanies 0–6M 6–12M 1–2Y 3–4Y
Circumference (cm) 35–43 43–46 46–50 50–53
Sunhats Small Medium Large
Age 0–6 months 6 months – 2 years 2–4 years
Circumference (cm) 37–43 43–48 48–53
Accessories Size Guide
Cotton Socks Newborn 0-6M 6-12M 1-2Y 3-4Y 5-6Y
Sock Foot Length (cm) 7 9 10 12 13 15.5
Merino Socks Small Medium Large
Sock Foot Length (cm) 9 12 14
Cotton Tights 0-6 months 6-12 months 1-2 years 3-4 years
Waist (cm) 33 37 38 39
Length waist to toe (cm) 38.5 45.5 55 61
Foot Length (cm) 9 10 12 13
Drawstring Booties 0-3M 3-6M
Length (cm) 8.5 10.5
Booties & Slippers Size Guide

Our classic lambskin booties and slipper sole measurements. All measurements in centimetres.

Lambskin Booties Lambskin Length (cm)
0–3M 10
3–6M 11
6–12M 12
1Y 14
2Y 15.5
Raincoats & Splash Overalls Size Guide

All children come in different shapes and sizes and this is intended to be a guide only. While we do our best to ensure all our sizing is consistent, you may find that some styles will vary in size.

Our size guide reflects the maximum measurements for each age.
Raincoat Jackets Height (CM) Chest (CM)
1-2 years 92 56
3-4 years 108 60
5-6 years 120 64

Splash Overalls Height (CM) Chest (CM) Garment Length (chests to hem)
1-2 years 92 56 66
3-4 years 108 60 77.5
5-6 years 120 64 86
Sleeping Bags Size Guide

All babies come in different shapes and sizes and this is intended to be a guide only. While we do our best to ensure all our sizing is consistent, you may find that some styles will vary in size due to different fabric qualities.

All measurements given below are garment measurements. Our waffle sleeping bag is designed to have larger chest and length measurements to allow for shrinkage due to the nature of waffle fabric.

Sleeping Bags Length (CM) Chest Width (CM)
Cotton Sleeping Bag (0–24m) 90 34
Cotton Sleeping Bag (2y) 110 34
Cotton & Merino Sleeping Bag (0–24m) 90 34
Cotton & Merino Sleeping Bag (2y) 110 31
Quilted Duvet Sleeping Bag (0–24m) 90 34
Waffle Sleeping Bag (0–24m) 100 37
Blankets & Wraps Size Guide

Please use the following as a guide to help you decide which size to buy. All measurements are in centimeters.

Cotton Knit Blankets Bassinet Cot Single Bed
Width 90 100 130
Length 100 130 170
Cotton Waffle Blankets Bassinet Cot
Width 90 100
Length 110 145
Merino Knit Blankets Bassinet Cot
Width 80 100
Length 110 120
Wraps Cotton Merino Muslin
Width 100 80 120
Length 100 80 120
Bed Linen Size Guide
Fitted Sheets Bassinet Cot King Single
Width 45 70 110
Length 85 130 206
Depth 14.5 19 40
Cotton Knit Blankets Bassinet Cot Single Bed
Width 90 100 130
Length 100 130 170
Cotton Waffle Blankets Bassinet Cot
Width 90 100
Length 110 145
Merino Knit Blankets Bassinet Cot
Width 80 100
Length 110 120
Play Mat One Size
Width 120
Length 120
Mattress Size Guide
Mattresses Length (cm) Width (cm) Depth (cm)
Moses Basket Mattress 74 38 10
Bassinet Mattress 82 40 12
US Cot Latex Mattress 131 71 10
Bassinet Mattress Protector 90 50
Cot Mattress Protector 120 75
Mother's Day Capsule

A limited-edition sleepwear collection for mothers, in soft organic cotton pointelle. Measurements are in centimeters.

Luna Set
Size XS S M L XL
Top Underarm to Underarm 35.5 38 40.5 43 45.5
Top Body Length 61 63 66 69 70.5
Pants 1/2 Waist 31.5 34 36.5 39 41.5
Pants 1/2 Hip 39 42 45 48 50
Pants Length 100.5 101.5 102.5 103.5 104.5
Sol Tee
Size XS S M L XL
Top Underarm to Underarm 54 56 58 60.75 63.5
Top Body Length 63.5 65 66.5 68 69.5
Size Guide for Mum

International size conversions

Size Small Medium Large XL
NZ/AU 10 12 14 16
US 4–6 6–8 8–10 10–12
UK 10 12 14 16
JP 9 11 13 15
FR 38 40 42 44
Maternity Wear Size Guide

Please use the following as a guide to help you decide which size to buy. All measurements are in centimeters. Our sizing is based on pre-pregnancy size, you should not have to size up from pre-pregnancy size.

For example, if you wear a size small pre-pregnancy, you should shop for a size small, not a medium. In addition, you do not need to move up a size throughout pregnancy. Maternity clothes are intended to grow with the belly.

Maternity Wear Small Medium Large
Bust 94 102 108
Length 71 75 79
Saltwater Sandals Size Guide

Size chart and guide for the Original Saltwater Sandals. All measurements are of the sandal inner sole.

Please contact customer service at hello@naturebaby.co.nz for further assistance.

US Size Insole Measurement (cm) UK Size EU Size
4 13.8 3 19
5 14 4 20/21
6 15 5 22
7 16 6 23
8 16.5 7 24
9 17.5 8 25
10 18 9 26/27
Gumboots Size Conversion Guide
Insole Measurement (cm) US Size AU/UK Size EU Size
145421
14.86522
157623
15.58724
169825
16.510926
17.8111027
18.3121128
Footwear Size Conversion Guide
Age (approximate) US Size AU/UK Size EU Size
0 - 3 months2117
3 - 6 months3219
6 - 9 months4320
9 - 12 months5421
12 months6522
18 months7623
24 months8724
2 years9825
3 years10926
4 years111027
5 years121128
6 years131229