15 Tog Duvets UK | Single to Super King

The heaviest tog rating we stock, built for cold bedrooms and anyone who feels the chill most through winter. Pick your size below.

Our 15 tog duvets provide maximum insulation for particularly cold bedrooms, draughty properties and sleepers who regularly feel cold overnight. Browse all duvets, compare our complete range of winter duvets, or read the UK duvet tog guide before choosing your warmth rating.

Why 15 tog is the warmest widely available rating

15 tog sits at the top of the scale most UK retailers offer, providing the highest level of thermal insulation available without moving into specialist or niche ratings. It's generally reserved for genuinely cold bedrooms, older properties with less insulation, or anyone who consistently feels cold overnight even under a 13.5 tog duvet.

Is a 15 tog duvet too heavy for everyday use?

For many UK homes, particularly those with reliable central heating, 15 tog can feel too warm for most of the year. It generally works best as a dedicated cold-weather duvet used during the coldest part of winter. If you prefer changing duvet warmth as temperatures rise and fall, explore our seasonal duvet options.

Who tends to choose 15 tog

15 tog is often chosen by people who have previously found 13.5 tog insufficient, anyone sleeping in a poorly insulated or draughty room, and sleepers who naturally feel cold at night. If you want strong winter insulation without choosing the highest rating, compare our 13.5 tog winter duvets.

15 tog and heat retention on larger duvet sizes

On larger sizes such as king and super king, the increased surface area of the duvet can make heat feel slightly more retained and even across the bed compared with a single duvet at the same tog rating. Worth bearing in mind if you're ordering a larger size specifically for warmth — the size itself contributes to how warm the bed feels, not just the tog number alone.

Shop this maximum-warmth rating by bed size: browse 15 tog single duvets, 15 tog double duvets, 15 tog king size duvets and 15 tog super king duvets.

FAQ

Is a 15 tog duvet too heavy for most bedrooms?
For a well-heated, average UK bedroom, it can feel warmer than necessary for most of the year. It's generally best suited to particularly cold rooms or the coldest weeks of winter specifically.
What's the difference between a 15 tog and a 13.5 tog duvet?
15 tog provides noticeably more warmth than 13.5, making it the better option for colder rooms or anyone who's found 13.5 tog insufficient in the past.
Should I buy 15 tog if my bedroom is draughty or poorly insulated?
It's a reasonable option in that situation, since 15 tog is designed to provide maximum warmth for exactly this kind of colder or less insulated bedroom.
Can a 15 tog duvet be used all year round?
It's possible in a consistently cold bedroom, though most people find it too warm outside of winter and switch to a lighter tog for the rest of the year.
Is 15 tog the warmest duvet available?
It's the warmest widely stocked rating from most UK retailers, though some specialist products go higher. For typical home use, 15 tog covers the vast majority of cold-weather needs.