The Wool Duvethttps://thewoolduvet.com/2026-10-07T00:00:00Z The Wool Duvet editorial desk What a wool duvet ishttps://thewoolduvet.com/what-is-a-wool-duvet/2026-10-07T00:00:00ZA wool duvet is layers of wool batting sealed in a cotton shell and stitched so the wool stays spread across the bed. Sellers also call it a wool comforter or a duvet insert. Guideshttps://thewoolduvet.com/guides/2026-10-07T00:00:00ZGuides collect here, newest first. Comparedhttps://thewoolduvet.com/compared/2026-10-07T00:00:00ZEach comparison here names its basis before its verdict, and every figure links to the page it came from. Carehttps://thewoolduvet.com/care/2026-10-07T00:00:00ZMost wool duvets are kept clean by airing, spot cleaning and a washable cover rather than by a washing machine. Methodhttps://thewoolduvet.com/method/2026-09-19T00:00:00ZNothing here has been slept under for a season or weighed on anything. Figures come from published sources, linked where used, or from counts of what sellers and standards state. Abouthttps://thewoolduvet.com/about/2026-10-07T00:00:00ZWritten and maintained by its editorial desk, this reference covers wool duvets and comforters. Should you own a lighter and a heavier wool duvet instead of one?https://thewoolduvet.com/guides/the-two-duvet-system-a-lighter-one-and-a-heavier-one-instead-of-one-co/2026-09-27T00:00:00ZOne duvet has to get a sleeper through a humid July night and a January night with the heat turned down, and one weight rarely handles both. The two-duvet system gives that job to two layers, a light one and a heavier one, joined together when winter needs both. Why can't most wool duvets go in a washing machine, and what should you do instead?https://thewoolduvet.com/guides/why-most-wool-duvets-cannot-go-in-a-washing-machine-and-what-to-do-ins/2026-09-27T00:00:00ZWool fibers are covered in tiny scales that all point the same way. A washing machine supplies the water, warmth and tumbling that lock those scales together for good. In a duvet, that means the fill shrinks, hardens and bunches up inside a shell that stays the same size. We read 10 sellers' care pages. Six of them either forbid the machine or allow it only with the wash cycle switched off. Do wool duvets keep dust mites away?https://thewoolduvet.com/guides/wool-duvets-and-dust-mites-the-evidence-and-its-limits/2026-09-27T00:00:00ZMany sellers describe wool bedding as a natural fix for dust mite allergy, and some allergy clinics tell you the opposite. This page sets out what the published research measured and what it did not. It also covers what that leaves you to do at home. What does a wool duvet do with your sweat, hour by hour through the night?https://thewoolduvet.com/guides/wool-through-the-night-what-moisture-handling-looks-like-hour-by-hour/2026-09-27T00:00:00ZYour skin and lungs lose about 800 mL of water a day without any visible sweat, a little under a quart (Brandis, LibreTexts). At night, the skin's half of that goes into your bedding. What a wool duvet does with that water depends on the hour, because the body sheds most of its heat early in the night and cools toward morning. How do you convert a wool duvet's GSM to tog?https://thewoolduvet.com/guides/gsm-and-tog-two-systems-for-the-same-question-converted/2026-09-26T00:00:00ZWool duvets from British, Australian and New Zealand sellers usually list their weight in GSM. The synthetic duvet you are replacing may have had a tog rating, and many US wool comforters give neither of these, only pounds of fill. This page converts the parts that really can be converted. For the rest, it shows what sellers' own pairings say. How is a wool duvet built, layer by layer?https://thewoolduvet.com/guides/how-a-wool-duvet-is-actually-built-layer-by-layer/2026-09-26T00:00:00ZA wool duvet looks like one soft slab, but it has three working parts: layers of carded wool batting, a woven cotton shell, and the stitching that keeps the wool from sliding. The amount of wool matters most to how warm it feels, and it is the figure product pages most often leave out. Knowing the parts makes it easy to spot what a listing is missing and ask the seller for it. What size wool comforter do you need for a king or queen bed?https://thewoolduvet.com/guides/wool-comforter-king/2026-09-26T00:00:00ZA wool comforter sold as "king" does not come in one fixed size. The US product pages we read for this guide listed kings at several different widths, and three of the eight did not plainly say how much wool was inside. Those two gaps decide whether the mattress edge shows and how warm the bed feels. This page shows you how to check width, side drop and fill weight before you pay. Is a wool or down comforter better for your bed?https://thewoolduvet.com/guides/wool-vs-down-comforter/2026-09-26T00:00:00ZA wool comforter and a down comforter can both keep a sleeper warm through a US winter, but they do it in different ways. Down traps more still air for each ounce of fill, so the sleeper carries less weight on the bed. Wool is denser and heavier, and the fiber absorbs water vapor from the skin, carrying heat away with the damp, which is why people who sweat at night often lean toward it. What makes an organic wool comforter organic, and is it worth it?https://thewoolduvet.com/guides/organic-wool-comforter/2026-09-25T00:00:00ZAn organic wool comforter is a quilted cotton shell filled with wool from certified organic farms. In the United States, the word "organic" on one depends on a private textile standard, not on the USDA seal most shoppers know from food. This page explains what that standard checks, how often seller pages let you verify it, how warm each fill weight runs, and what the sleep research does and does not show. What is a washable wool comforter, and can it be organic?https://thewoolduvet.com/guides/washable-wool-comforter/2026-09-25T00:00:00ZA washable wool comforter is filled with wool that was treated at the mill so it can go through a home washer without shrinking into felt. Most washable wool gets that treatment from chlorine. One review estimates that about 70% of wool labeled fully machine-washable goes through the chlorine-Hercosett process (PMC review). That matters if you also want organic, because GOTS, the Global Organic Textile Standard that certifies how organic fiber is processed into fabric, prohibits chlorination of wool (Global Standards). Below you'll find the treatments, the labels, the fill weights sellers publish, and the drying advice from 10 seller pages we read. How do you choose a wool duvet insert?https://thewoolduvet.com/guides/wool-duvet-insert/2026-09-25T00:00:00ZBy the sellers' figures, a full/queen wool duvet insert holds about 3 to 7 pounds of wool. Holy Lamb Organics, one US maker, sells its full/queen comforter in three fill weights across that range (Eco Carmel). The product name seldom tells you where in that range you are buying. This page turns what sellers state into one figure you can compare, ounces of wool per square yard. It then sets out what the sleep research does and does not support. What should you know before buying a wool comforter?https://thewoolduvet.com/guides/wool-comforter/2026-09-22T00:00:00ZWool bedding is sold under three names for one object, with two ways of stating warmth. The care label can even contradict the logo beside it. The numbers exist. They sit on pages most shoppers never open.