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In this blog I’ll talk through a TOG — a term you had probably never heard of before kids unless you worked at a bedding company! There’s a downloadable TOG temperature chart and all the reasons why these TOGs are so important for dressing your baby safely, comfortably and appropriately for different room temperatures.
What Is a TOG Rating?
TOG stands for thermal overall grade, or in simple terms, how warm an item of bedding or clothing is. It describes the thickness and warmth of all different sorts of material, but for babies and children it generally relates to swaddles, sleeping bags and sleep suits. Understanding TOG ratings helps you choose the right fabrics and insulation levels for your baby’s needs, based on the specific room temperature where they sleep
Why TOG Ratings Matter for Baby Sleep
TOG ratings are essential for safe and comfortable baby sleep, as they help parents choose the right TOG rating based on room temperature and other factors in the baby’s sleep environment. Dressing your baby appropriately supports healthy body temperature regulation, which newborn babies can’t yet control on their own. Overheating or being too cold are known risk factors for disrupted sleep and even SIDS.
With TOG-rated sleepwear like sleep bags and suits, you can dress your baby in the right clothing layers and avoid loose bedding that can shift during the night. This dressing guide is especially helpful during seasonal changes and helps keep your baby comfortable and safe.
🛏 Most adult donnas are 7.5–11.5 TOG!
An all seasons doona generally has a TOG of 7.5–11.5 so it’s easy to see why even in the colder months and a higher-rated sleeping bag or swaddle, you will most likely still need to heat the room a little to a comfortable temperature. So yes, your 3.5 TOG sleeping bag might still need a little room heating support in winter.
The Benefits of Using a TOG Guide
The benefit of putting your baby or child in a TOG-rated garment is that you have peace of mind that your child is dressed appropriately during sleep time, with their body temperature supported through the night. TOG garments also help reduce reliance on loose bedding, and are safer in case of temperature drops.
What Do the Different TOG Ratings Mean?
Here’s a quick breakdown of various TOG ratings and when you’d use them:
| TOG | Best For | Temperature Guide |
| 0.2 TOG | Very warm rooms or summer | Over 25°C |
| 1.0 TOG | Mild nights or warmer weather | 23–24°C |
| 2.5 TOG | Most cool nights or homes with no heating | 20–22°C |
| 3.5 TOG | Very cold nights or poorly insulated rooms | 16–19°C |
How to Use TOG Ratings the Right Way
✔️ Your Baby’s Room Temperature: Use a room thermometer to measure the actual temperature where your baby sleeps — not the hallway or outside.
✔️ The TOG of Your Baby’s Sleepwear Choose the right TOG rating for the temperature conditions in your baby’s room. Print or save the chart as your go-to dressing guide.
✔️ What Baby Is Wearing Underneath The TOG rating refers only to the sleep suit or sleep bag — not what’s worn underneath. Choose clothing layers to suit the room temp:
- A 2.5 TOG might be paired with a singlet + long-sleeve bodysuit in 20°C
- A 1.0 TOG may only need a long-sleeve onesie if your baby runs warm
If the TOG rating is higher, fewer clothing layers are needed.
Signs Your Baby Might Be Too Hot or Too Cold
Baby is Too Hot
- Hot, damp chest or back
- Flushed cheeks
- Crankiness or frequent waking
- Mild fever (sometimes confused with illness) 🛑 Babies don’t sweat well — overheating is a serious risk factor.
Baby is Too Cold
- Cold chest or back (not just hands!)
- Red nose, cool cheeks
- Baby curled up with knees under (classic cold posture)
- Early waking between 3–5am
Babies Can’t Regulate Temperature Like We Can
Newborn babies can’t regulate body temperature like adults — they lose heat quickly, don’t sweat efficiently, and can’t adjust their clothing. Babies don’t control their environment, so choosing the right TOG rating makes all the difference in keeping your baby warm and safe.
Temperature Drops Overnight
Even if your baby’s room is 22°C at bedtime, it could drop to 14°C by 4am.
Sign your baby may be too cold overnight:
- Early waking
- Restlessness
- Cold hands or a red nose
- Bum-up posture — a classic sign of feeling cold
The appropriate TOG rating helps manage your baby’s temperature and keeps your baby comfortable, even across different room temperatures.
TOG Sleepwear Reduces Risk Compared to Blankets
Loose bedding can pose a suffocation or overheating risk. TOG-rated sleepwear like suits and bags keep baby’s face uncovered, provide steady thermal insulation, and are safer through the night. They also work better with different fabrics across seasons.
Can I Use Blankets Instead of a TOG Sleeping Bag?
Blankets can be used if tucked in securely below the chest — but they’re more prone to movement. A TOG-rated sleep suit or bag adjusts better to temperature conditions, and avoids the risk of blankets riding up. Wondering what baby should wear to bed? Use our chart for clear layering advice.
Common Mistakes with TOG Ratings
❌ Going by Outside Temperature — always go by room temperature
❌ Trusting Your Own Comfort — babies can’t throw off a doona
❌ Overlayering — remember, the higher the TOG rating, the fewer clothing layers are needed
Why It’s Worth Getting This Right
If your baby’s waking early or unsettled despite everything — their TOG rating might not match the temperature guide. Choosing the right TOG gives you:
- Confidence they’re safe and extra warm (but not overheated)
- Fewer wake-ups
- Better sleep for everyone
🍼 Want more tips? Explore:
- How to Dress Your Baby for Sleep – by Season
- Red Nose Guidelines for Safe Sleep
- Early Morning Waking: What It Really Means
