When selecting a down comforter, the term “TOGfrequently comes up. But what exactly does it mean, and how does it relate to down duvets? Knowing the tog rating helps you select the ideal down comforter for every season. This ensures you stay warm and comfortable throughout the year. In this guide, we’ll explore the meaning of it, how it’s measured, and which ratings are best suited for different climates and seasons, specifically for down bedding. 

What is TOG?

Thermal Overall Grade

Tog stands for "Thermal Overall Grade"—a measure of how well a duvet traps heat. For your down comforter, it indicates how much insulation it provides.


Since down is lightweight yet highly effective at retaining warmth, choosing the right tog ensures maximum comfort and performance.

Understanding the TOG scale for down comforters  

The scale is a handy tool that categorizes duvets by warmth. Ranging from 1 (lightly weighted) to 15 (extra-warm), this scale helps shoppers find the right level of comfort. For a down comforter, this scale is essential in determining the ideal duvet based on the season or your sleeping habits. 

Here’s a simple breakdown of the scale: 

For example, a 9 tog down duvet is versatile for many seasons, while a 13.5 tog duvet is best reserved for colder winter nights. If you’ve seen terms like 10.5 tog duvet or 15 tog duvet, these refer to the different levels of warmth the comforter provides, helping you choose the right one for your needs. 

While the TOG scale measures the warmth level, it doesn’t necessarily correlate with weight. Some down comforters may feel light, yet still have higher ratings. This is because down is a great insulator without adding extra bulk. So if you’re looking for a lightweight summer duvet, pay attention to both the fill material and the rating. 

TOG ratings and weight categories  

Different ratings fit various seasons, climates, and personal preferences. Here’s a breakdown of Linens Delight’s TOG scale and our weight categories: 

Choosing the right TOG for different seasons  

Here’s a quick reference guide to help you decide which rating you need: 

Final thoughts: Choosing the best TOG for your bedroom  

Choosing the best TOG rating for your duvet depends on several factors, including your individual sleep needs, your bedroom temperature, and the current season. Ultimately, the TOG rating acts as a helpful guide to ensure you find the ideal balance of warmth and breathability for a restorative night.

Whether you require a cool 4.5 TOG summer duvet or a cozy 13.5 TOG duvet for the winter months, down comforters are an excellent choice. Their superior insulation and lightweight feel make them a perfect solution for year-round comfort without the bulk of synthetic materials.

If you are still unsure which rating is right for your home, we invite you to: