Ten Cate All Year duvet, 140 by 200 cm at 71.96 euro: warmth class 3, which the maker defines as average to cool bedrooms

This is a 140 by 200 centimetre Ten Cate All Year duvet filled with 15 percent duck down and 85 percent feathers, a mix the trade calls half-down, at a fill weight of 980 grams, in a cotton cover carrying the Nomite label. Ten Cate rates it warmth class 3 and states on the same page that class 3 suits average to cool bedrooms. It is 71.96 euro with 89.95 struck through, rated 4.7 from 102 reviews, and shown as arriving by 9 September. Why look at a duvet now: the official Dutch energy advice is not to turn the bedroom thermostat down a couple of degrees. It is to turn bedroom heating off, and that advice does not tell you what to sleep under afterwards.

• Specification: 15 percent duck down and 85 percent feathers, a 980 gram fill in the 140 by 200 size, a cotton cover, warmth class 3 and the Nomite label for a weave dense enough to keep dust mites out. (source 1)
• What the maker says the class means: the page states plainly that warmth class 3 is ideal for average to cool bedrooms, and describes the duvet as usable in all seasons, moderate in weight and moisture-regulating. (source 1)
• Price and rating: 71.96 euro against a struck-through 89.95, rated 4.7 from 102 reviews, with delivery shown by 9 September at the latest. (source 1)
• Official advice, part one: Milieu Centraal advises setting the thermostat to 15 degrees at night and estimates that at roughly 60 euro a year. (source 2)
• Official advice, part two: the same page advises turning heating off in rooms nobody is using, bedrooms included, and estimates turning off the upstairs heating at about 80 euro a year. (source 2)
• One exception: with underfloor heating or a fully electric heat pump the same page advises 17 or 18 degrees at night rather than 15. (source 2)

The sum runs like this: add the two official estimates together, then divide the price of the duvet by the total. Fifteen degrees at night is about 60 euro a year and switching the upstairs heating off is about 80, which is 140 euro a year between them. 71.96 divided by 140 is roughly 0.5, so about half a heating season. But the sum has a precondition, and the precondition is the real point: those 140 euro only appear once you actually turn the bedroom heating off, and the reason most people do not is not the money, it is waking up cold at three in the morning. Class 3, which Ten Cate defines as average to cool bedrooms, describes exactly the room you get after the heating goes off.

Two of your own numbers go into it. First, what your heating actually costs you in a year: the 60 and 80 euro above are Milieu Centraal estimates for an average home, not your home, and the larger and less insulated the house, the further your figure sits from theirs. Second, how cold your bedroom already is. If you have already stopped heating it, this duvet buys comfort rather than savings and the sum has to be rewritten; if you currently heat it all night, the 140 euro line is the one that applies to you.

The class itself deserves a paragraph. Dutch duvets are sold in warmth classes one to four, warmer as the number rises. Ten Cate places class 3 at average to cool, which leaves class 4 for genuinely cold rooms. So if your bedroom drops into the low teens in winter, class 3 may be exactly right or may be one step short, and no product page can settle that for you. A thermometer in the room on the coldest few nights can.

Two practical details. This is a single All Year duvet rather than the two-part four-season kind you can unclip, so there is no thinner half to use in summer; the page says it manages all seasons through breathability and moisture regulation instead. And the Nomite label is about weave density keeping dust mites out, which matters if someone in the house has a dust mite allergy and is merely a bonus if nobody does.

The bol link on this page is an affiliate link: the duvet is still 71.96 euro if you order through it, and Hokimi may receive a small commission.

Price

71.96 euro, struck through from 89.95

Rating

4.7 out of 5 from 102 reviews

Specs

140×200 cm・15% duck down, 85% feathers・980 g fill・warmth class 3・cotton cover

Platform

bol.com, EAN 8721022872247

Checked

Listing read on 7 September 2026