What is a TOG rating?

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We know that many parents and carers can find dressing their baby for the right temperature confusing. It can become even more challenging when you’re trying to find the right TOG rating to choose. We agree, it’s not simple and there are a host of factors that influence this decision, making it challenging to give blanket advice to parents and carers. Every baby feels hot and cold differently to another, ambient temperatures fluctuate, and different clothing and sleepwear layer combinations will differ in their thermal effectiveness.

reviewed by Genevieve Titov, Sleep Angel

8 min read |

31 January, 2025

We've developed a comprehensive TOG guide to streamline the process of dressing your baby for optimal comfort. This guide covers everything from understanding TOG ratings and their significance to practical insights on selecting the right clothing. Whether you're curious about the meaning of TOG, consulting a TOG chart, searching for a top temperature guide, or simply asking "what is TOG?" - our comprehensive TOG guide is your go-to resource.

Quick links:

What does TOG mean
How to choose the right TOG
TOG Temperature Chart
TOG Guide for Swaddles and Transition bags
TOG Guide for Sleep Bags and Sleep Suits
FAQs

What does TOG mean?

TOG stands for Thermal Overall Grade and is an industry-recognized measurement for the warmth of garments and bedding. Generally, a thinner, lighter fabric will have a lower TOG rating (closer to 0 TOG), and the thicker and warmer the fabric, the higher the TOG rating such as 2.5 or 3.5 TOG.

Below is a set of guidelines to help parents and carers understand which TOG values are suitable for different room temperatures:

0.2 TOG – Ideal for room temperatures between 24–27°C
1.0 TOG – Ideal for room temperatures between 20–24°C
1.5 TOG – Ideal for room temperatures between 18–22°C
2.5 TOG – Ideal for room temperatures between 16–20°C
3.5 TOG – Ideal for room temperatures below 16°C

How to choose the right TOG for your baby to wear to bed

We believe the simplest way to make sure your baby is suitably dressed is to dress for room temperature using the system above. we've also created a temperature guide which factors in clothing/sleepwear layers which is a key contributor to overall warmth for your baby. .

To best dress for different room temperatures and ensure you select the right Love to Dream product follow these three simple steps:

Prior to selecting a Love to Dream product we would recommend having a good understanding of the temperature of your baby’s room.
Always look for the ideal room temperature guidance on our products and website to help your selection.
Follow the recommended clothing by room temperature guide below

Put simply:

The lower the TOG rating, the lighter the fabric.

The higher the TOG rating, the warmer the fabric.

A 0.2 TOG is ideal for hot or warm weather, while 2.5 or 3.5 TOG is perfect for colder, winter-like conditions. For those in-between seasons, like spring and autumn, a 1.0 or 1.5 TOG works best.

1.5 TOG | 18-22˚C

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1.0 TOG | 20-24˚C

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2.5 TOG | 16-20˚C

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How to choose the right TOG rating for your baby to wear to bed

We believe the simplest way to make sure your baby is suitably dressed is to use room temperature as well as TOG ratings. To best dress for different room temperatures and ensure you select the right Love to Dream product follow these three simple steps:

Prior to selecting a Love to Dream product we would recommend having a good understanding of the temperature of your baby’s room.
Always look for the ideal room temperature guidance on our products and website to help your selection.
Follow the recommended clothing by room temperature within the temperature chart below.

TOG Temperature chart

Our aim at Love To Dream is to empower parents to choose the right products and fabrics from our range that best suit their children’s needs. Our product range has therefore been designed and made with different fabrics and with different constructions ranging from a single layer of fabric up to a triple-layered construction, with built-in quilted features to ensure we have all temperatures from Warm to Cold covered. This table provides you with guidelines around how to dress your baby/toddler based on the room temperature. The table is only a guide. All babies are different. The number of clothing layers may vary according to a baby’s health, their physiology & the temperature in the room. The care-giver must determine what is suitable.

Did you know?..

Every child and everybody feels hot and cold differently, ambient temperatures fluctuate, the child’s general health and wellbeing will impact body temperature and different clothing and sleepwear layer combinations will differ in their thermal effectiveness. As these factors make it challenging to give absolute and definitive advice to parents and carers, the clothing guide should be used only as a general guide. The parent or carer is best suited to determine the right sleepwear and clothing combinations for the child.

How to use our TOG temperature chart

To choose the right product for your child, follow these 3 simple steps:

Determine the temperature or the room your baby will be sleeping in
Use our TOG guide to determine the matching rating (for example: if your baby sleeps in a ~20C room the ideal TOG is 1.0 TOG.
Depending on the room temperature, your baby’s health and their physiology you then decide on the number of layers to wear underneath the sleep garment. (In the above a example the ideal combination could be long-sleeved pyjamas and a sleeveless bodysuit).

How should I consider TOG when dressing my child?

Published TOG ratings (with appropriate rounding) should be considered in conjunction with our specific clothing guides (found online and on pack) and are from test results that we believe reflect the appropriate TOG when used in conjunction with our clothing guides. Test methods are EN ISO 11092, ASTM 1291(modified to the same parameters as EN ISO 11092) and ISO 5085-1.

We believe that our TOG ratings, together with our clothing guides, help parents and carers make the best decision on how to dress their child at different room temperatures. We also provide guidance on how the parent or carer can check if the child is too hot or too cold. This is important in empowering the parent or carer to decide what is best for their child. All children are different. The number of clothing layers required may vary according to a child’s health, their physiology the room temperature, the outside temperature and other factors. The care-giver must determine what is suitable. We do not provide medical advice.

The TOG rating (with appropriate rounding) is obtained using any one, or combination, of the below globally recognised test methods, EN ISO 11092, ASTM 1291(modified to the same parameters as EN ISO 11092) and ISO 5085-1.

TOG guide for Swaddles and Transition Bags/Suits

Our Swaddle Up and Transition Bag/Suit range comes in a variety of TOG ratings.

The SWADDLE UP™ Original, Organic, Bamboo are a 1.0 TOG rating
The SWADDLE UP™ Lite, Organic Lite, Bamboo Lite are a 0.2 TOG rating
The SWADDLE UP™ Cotton Fleece is a 1.5 TOG rating
The SWADDLE UP™ Quilted Cotton are a 2.5 TOG or 3.5 TOG rating

The Transition Bag Original, Bamboo as well as the Transition Suit Original are a 1.0 TOG rating
The Transition Bag Lite, Bamboo Lite as well as the Transition Suit Lite are a 0.2 TOG rating
The Transition Bag Cotton Fleece is a 1.5 TOG rating
The Transition Bag Quilted Cotton are a 2.5 TOG or 3.5 TOG rating

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TOG guide for sleeping bags & sleep suits

Our Sleep Suit and Sleep Bag range comes in a variety of temperature ratings.

Sleep Suits

Sleep Bags

Common FAQs on dressing your baby for sleep

What temperature should your baby be at night?

The Lullaby Trust recommends:

Optimal Temperature: Keep the room temperature between 16-20°C to reduce the risk of SIDS.
Use a Thermometer: Employ a room thermometer for accurate measurement.
Monitor Baby's Temperature: Check the baby's chest or back of the neck to ensure they are not too hot or cold.
Appropriate Bedding: Use light bedding or a lightweight, well-fitting sleep bag; avoid hats and heavy blankets indoors.
Adjust for Seasons: In warmer weather, use lighter bedding and ensure good ventilation; in cooler weather, add layers as needed but avoid overheating.

How do I know if my baby is too cold while sleeping? If concerned, it’s important to check your baby’s temperature to ensure they’re comfortable. You can do this by feeling your child’s back or tummy, which should feel warm. Signs your child might be too cold: shivering, cold hands and/or feet, fussiness. To maintain a warm sleeping space, use a room thermometer combined with our Clothing guide above to choose a suitable product that works well with the season/temperature.

How do I know if my baby is too hot while sleeping? If concerned, it’s important to monitor your baby’s temperature. Below, find common signs that your baby is too hot during the summer months. Signs your child might be too warm: Sweating, warm to the touch and flushed skin. To bring your child’s temperature down, follow these steps: Offer fluids suitable for their age. Change the fabric grade of their sleepwear to suit room temperature. Move your child to a more well-ventilated room if possible. If you’re still worried about your child’s temperature, please seek medical advice.

Can I layer sleep bags to increase the warmth?

It’s not recommended that you layer sleep bags or swaddles, as this can increase the risk of overheating or suffocation. Instead, choose an appropriate garment for the room temperature and select lightweight layers that can be worn beneath.

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What Should A Baby Sleep In? A sleepwear guide by age and stage

Product	Dimensions
Burp Cloth	61cm x 28cm
Hooded Towel	80cm x 80cm
Wash Cloth	25cm x 25cm
Bib	44cm x 28cm

Size	Max height
0000 (Newborn)	60cm24"
000 (0-3 months)	62cm25"
00 (3-6 months)	68cm27"
0 (6-12 months)	76cm30"
1 (12-18 months)	84cm33"
2	92cm36"
3	100cm39"

Size	Max height
0000 (Newborn)	60cm24"
000 (0-3 months)	62cm25"
00 (3-6 months)	68cm27"
0 (6-12 months)	76cm30"
1 (12-18 months)	84cm33"
2	92cm36"
3	100cm39"

Size	Age	Max height
2	2 years	92cm
3	3 years	100cm
4	4 years	108cm
5	5 years	115cm
6	6 years	120cm
7	7 years	125cm
8	8 years	130cm

Size	Max height
0000 (Newborn)	60cm24"
000 (0-3 months)	62cm25"
00 (3-6 months)	68cm27"
0 (6-12 months)	76cm30"
1 (12-18 months)	84cm33"
2	92cm36"
3	100cm39"

Product	Dimensions
Bassinet/Basket	80cm x 40cm x 9cm
Cot/Crib	132cm x 77cm x 19cm

Size	Weight	Max height
TINY Tiny Baby	4.4lbs 2kg	50cm 20"
NB Newborn	5 - 8.5lbs 2.2 - 3.8kg	60cm 24"
S	8 - 13lbs 3.5 - 6kg	62cm 25"
M	13 - 19lbs 6 - 8.5kg	68cm 27"

Size	Weight	Max height
M	13 - 19lbs 6 - 8.5kg	68cm 27"
L	19 - 24lbs 8.5 - 11kg	76cm 30"
XL	24 - 32lbs 11 - 14kg	84cm33"

Size	Max height
6-12 months	84cm33"
12-24 months	92cm36"
2-3 years	100cm39"

Size Guide

Product

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Age

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The fit should be snug

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What is a TOG rating?

Quick links:

What does TOG mean?

How to choose the right TOG for your baby to wear to bed

Put simply:

The lower the TOG rating, the lighter the fabric.

The higher the TOG rating, the warmer the fabric.

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How to use our TOG temperature chart

How should I consider TOG when dressing my child?

TOG guide for Swaddles and Transition Bags/Suits

TOG guide for sleeping bags & sleep suits

Common FAQs on dressing your baby for sleep

What temperature should your baby be at night?

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