What Is Fill Power & Tog Rating?

Understanding what keeps you warm at night starts with knowing the basics. Fill power and tog rating are two essential terms when it comes to choosing the perfect duvet.

  • Fill Power

    Fill Power refers to the quality and fluffiness of the down filling. The higher the fill power, the warmer the insulstion — without adding weight.

  • Tog Rating

    Measures a duvet’s ability to retain heat. The higher the tog, the warmer the duvet.

Our Duvet Collections Explained

We offer quality duvets to suit all seasons and personal preferences

Summer Selection

4.5 Tog – 150g | Lightweight

Sleep cool and comfortable through warm summer nights with our lightest duvet designed to give you just the right amount of coverage without overheating.

Ideal for:
– Hot sleepers
– Warm climates
– Summer months

View Our Selection

Autumn Selection

10.5 Tog – 300g | Perfect All-Rounder

Looking for one duvet to keep on your bed most of the year? This is it. The Autumn Collection offers balanced warmth for spring and autumn, and even works for winter in well-insulated homes.

Ideal for:
– All-season use
– Temperate climates
– Everyday comfort

Reliable, cosy, and perfect year-round.

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Winter Selection

13.5 Tog – 400g | Maximum Warmth

Get through the coldest nights in total comfort. Our Winter Collection is generously filled to give you that luxurious, enveloped feeling — without being heavy or bulky.

Ideal for:
– Cold sleepers
– Winter months
– Homes with little heating

Stay warm, sleep better. Make winter cosy.

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All Seasons Selection

4.5 + 9.0 Tog = 13.5 Tog | 3-in-1 Versatility

One duvet for the entire year. Use the 4.5 tog alone in summer, the 9.0 tog in spring/autumn, or clip both together to create a full winter-ready duvet.

Ideal for:
– All climates
– Couples with different needs
– People who want one solution for every season

Sleep your way, every day of the year.

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Frequently Asked Questions

What is a tog rating in a duvet?

A tog rating measures how well a duvet traps heat. Higher tog = warmer duvet. It’s a thermal rating, not a weight measurement.

What tog is best for summer?

A 4.5 tog duvet is best for summer. It’s lightweight and breathable for warm nights.

What tog duvet is best for winter?

A 13.5 tog duvet is ideal for winter, offering the most warmth and insulation.

What is fill power in a duvet?

Fill power measures the quality and loft of down. A higher fill power means more warmth with less weight.

What is an all seasons duvet?

An all seasons duvet includes two layers: a 4.5 tog for summer and a 9.0 tog for spring/autumn. When clipped together, they create a 13.5 tog duvet for winter.

What duvet should I use year-round?

A 10.5 tog duvet works well for most of the year. Or choose an all seasons duvet for complete flexibility.

How do I know when it’s time to replace my duvet?

If your duvet feels flat or lumpy, no longer keeps you warm, or shows visible signs of wear or staining, it may be time to upgrade. Increased allergies or nighttime discomfort can also be a sign.