I have, in twenty years of buying winter sweaters, owned approximately forty of them. The peak was 2019, when my closet held fourteen. I currently wear, every December, the same one. The sweater is a deep red, somewhere between currant and brick. The sweater is wool. The sweater is, by my standard, the single best thing I have ever bought at Uniqlo. The sweater cost $79. The other thirteen sweaters are, in various states of disuse, in a cotton storage bag under the bed.

The thirteen sweaters cost, in total, $2,140. The one sweater I wear every December cost $79. The thirteen sweaters do, by every measurement that matters, almost none of the work. The one sweater does, by every measurement that matters, almost all of it.

Below is the case for owning one good sweater instead of fourteen. A list of the seven sweaters I have tried in the last five winters, with honest notes. A frank discussion of merino vs. cashmere vs. lambswool vs. Shetland. The five beliefs I held about winter sweaters that the last five winters have killed. The seven categories I would tell you to skip. A brief history of how the wool sweater went from a 12th-century Sicilian peasant garment to a $39.90 Uniqlo bestseller. And an honest summary, because anyone who tells you a sweater collection is a personality has not, in fact, tried to fit fourteen sweaters into a Brooklyn closet.

The sweater

Ribbed merino crewneck, Uniqlo, $79 (winter 2021). Worn, by my best estimate, 280 days since purchase. The sweater is red. The sweater is wool. The sweater is, by my partner's description, "the color of a December sweater in a French film." The sweater fits, by my standard, exactly: shoulder seam at the shoulder, sleeve to the wrist bone, hem at the hip.

The wool is 100% extrafine merino. The merino, in 2026, is sourced, by Uniqlo's own description, from Australia. The yarn is, by every measurement, the finest wool yarn you can buy at under $100. It is not the finest wool yarn in the world. It is, in my standard, the only wool yarn you need.

I have washed the sweater, by hand, in cool water with a wool detergent, every six wearings. The sweater has, in five years, not pilled. The sweater has, in five years, not shrunk. The sweater has, in five years, not lost its color. The sweater looks, in 2026, almost exactly as it did in December 2021. The sweater is, by every measurement, the only red sweater I will ever buy.

Six other sweaters I have tried

In order of price, from cheapest to most expensive. Honest notes.

1. Uniqlo Heattech long-sleeve, $19.90 (2022). A base layer, not a sweater. Included here because I wore one under every sweater above for two winters. The Heattech is, by my standard, the only base layer worth buying at under $25. The Heattech is, by my standard, also too thin to be a sweater. The Heattech is, by my standard, the most underrated piece of clothing I own. Skip it as a sweater. Buy it as a base layer.

2. H&M lambswool blend, $39 (2020). Sold as 70% lambswool, 30% polyamide. The lambswool, by H&M's own description, was sourced in Italy. The polyamide, by H&M's own description, was sourced in Taiwan. The polyamide pilled at the elbows by month two. The lambswool stretched at the cuffs by month three. I wore it for one winter. I donated it in 2021. The $39 was, in my standard, the cheapest way to learn what a sweater should not be.

3. Uniqlo 100% merino crewneck, $39.90 (2020). The sweater I bought before I bought the red one. The sweater was navy. The sweater fit, by my standard, perfectly. The sweater pilled at the inner elbows by month four. The sweater stretched at the cuffs by month six. The $39.90 was, in my standard, the cheapest way to learn that not all merino is equal. The $79 red sweater is, by my standard, what the $39.90 navy sweater was trying to be.

4. Everlane Grade-A cashmere crewneck, $100 on sale (2022). Tried, in the end, for two winters. The cashmere was, by Everlane's own description, sourced from Inner Mongolia. The cashmere was, by my standard, the softest cashmere I had ever owned. The cashmere pilled, by month three, into a small ball at the inner elbows that no amount of de-pilling could fix. The cashmere also, by my standard, lost its shape after every wash, in a way that no wool sweater ever has. I sold the cashmere in 2024 for $30 on Poshmark. The $100 was, in my standard, the most expensive way to learn that I am not a cashmere person.

5. N. Peal cable-knit cashmere, $385 (2023). Tried on at the N. Peal sample sale in SoHo. The cable-knit was, in every measurement, exquisite. The cashmere was, by my standard, the finest I had ever touched. The fit was, on me, slightly too cropped. The $385 was, in my standard, also too much for a sweater I would wear once a week. I left the sale with a scarf ($95) and not the sweater. The N. Peal is, by every measurement, the sweater I would buy if I were someone who wore cashmere. I am not that person.

6. Johnstons of Elgin Shetland crewneck, $185 (2024). The most recent sweater I tried before deciding the Uniqlo red was, in fact, the one. The Shetland is, by every measurement, beautiful. The wool is, by Johnstons of Elgin's own description, sourced from the Shetland Islands. The yarn is, by my standard, the roughest wool yarn I had ever touched. The roughness, by Johnstons' own description, is the point. The roughness is also, by my standard, the reason I did not wear the sweater against bare skin. The Shetland needs, in my standard, an undershirt. The Uniqlo red does not.

7. Toast lambswool turtleneck, $245 (2024). The Toast was, in every measurement, the sweater I almost bought. The lambswool was, by my standard, soft. The fit was, by my standard, slightly oversized. The turtleneck was, by my standard, slightly too tall. The color, a heathered oat, was, by my standard, the color of a sweater I would want to wear in a French film. The Toast is, in 2026, the sweater I would buy if the Uniqlo red did not already exist.

What I have changed my mind about

Five beliefs about winter sweaters I held before 2021, that the last five winters have killed.

I used to think cashmere was better than merino. Cashmere is, in my current standard, the most overrated fiber in the sweater industry. Cashmere pills. Cashmere stretches. Cashmere requires dry cleaning, or it shrinks in the wash. Merino does not. Merino recovers. Merino is, by every measurement, the more practical fiber for a sweater that gets worn 280 days. Buy merino. Skip the cashmere.

I used to think expensive meant better. The N. Peal $385 cable-knit is, in every measurable way, a finer sweater than the Uniqlo $79 merino. The N. Peal is, by the math, $300 better. The N. Peal is not, in any meaningful sense, $300 better per wearing. The Uniqlo is, by my cost-per-wear calculation, the cheaper sweater. The N. Peal would, by the math, take fifteen years to outperform the Uniqlo on cost per wear. Buy the sweater you will actually wear 280 days. Skip the sweater you will wear five times.

I used to think I needed layering. The Heattech base layer + the sweater + the coat was, for two winters, my November-to-March outfit. The base layer, in retrospect, was solving a problem I did not have. The base layer was adding a layer to peel off at every restaurant. The base layer was adding $20 to every outfit for a warmth benefit that, by my partner's description, "is not measurable." I dropped the base layer in 2023. I have not missed it.

I used to think I needed separate sweaters for separate occasions. The work sweater. The dinner sweater. The weekend sweater. The dog-walk sweater. The idea was, by my standard, the entire sweater industrial complex in miniature. The idea was, by my current standard, the reason I owned fourteen sweaters in 2019. The red Uniqlo does, in 2026, all four occasions. The red Uniqlo does them, by my standard, equally well. Buy one sweater that works for every occasion. Skip the rest.

I used to think I should rotate my sweaters. The "rotate to extend the life" advice is, by every textile scientist I have spoken to, mostly marketing. A sweater you wear 280 days will, in five years, look like a sweater you have worn 280 days. A sweater you rotate among three will, in five years, look like three sweaters you have worn 95 days each. The wear pattern is the same. The character is the same. Wear the one you love. Skip the rotation.

What to skip when buying a sweater

Seven categories I would tell you to skip entirely at the start.

Acrylic and acrylic blends. The $25 acrylic sweater at the fast-fashion chain is, by every measurement, a piece of plastic. Acrylic pilled at the elbows by month one. Acrylic stretched at the cuffs by month two. Acrylic does not, by my standard, breathe. Acrylic also, by my standard, holds every smell you have ever had. Skip acrylic entirely. Buy wool.

Oversized cuts. The oversized sweater is, in 2026, the most flattering cut on a very small number of bodies. The oversized sweater is, by my standard, the least flattering cut on most bodies. The oversized sweater looks, on me, like a sweater I have borrowed from my partner. The oversized sweater also, by my standard, makes me look five pounds heavier than I am. Buy a sweater that fits. Skip the oversized.

"Vintage" sweaters that itch. The vintage wool sweater is, by every measurement, a sweater that has been in a closet for forty years and is, in 2026, made of wool that has lost its softness. The vintage wool sweater also, by my standard, smells of cedar and the previous owner. The vintage wool sweater is, by my standard, the only sweater category where "vintage" is a warning sign. Buy new wool. Skip the vintage.

Statement colors. The bright yellow sweater. The bright pink sweater. The bright orange sweater. The bright color is, by my standard, a sweater you wear twice, then feel awkward every time. The bright color is also, by my standard, a sweater that does not photograph well in restaurants. The bright color is, by my standard, the fastest way to look like you are trying. Buy red. Buy navy. Buy cream. Skip the bright color.

Cropped cuts. The cropped sweater is, in 2026, the cut designed to show off high-waisted trousers. The cropped sweater is, by my standard, also the cut that exposes your midriff every time you reach for anything. The cropped sweater is, by my standard, the only sweater category where the fit depends entirely on what you are wearing underneath. Buy a sweater that ends at the hip. Skip the cropped.

Holiday-themed sweaters. The snowflake sweater. The reindeer sweater. The "ugly Christmas" sweater. The holiday sweater is, by my standard, a sweater you wear from November 28 to December 26. The holiday sweater is, by my standard, the only sweater category that has, by design, a built-in expiration date. The red Uniqlo is, in 2026, a sweater I wear from October to March. The red Uniqlo is, by my standard, the only holiday sweater you need.

Sweaters with logos. The logo sweater is, by my standard, a sweater you bought for the logo, not the sweater. The logo sweater is, by my standard, also the sweater that dates the fastest. The Polo logo. The Lacoste logo. The Abercrombie logo. The Tommy logo. The logos are, by my standard, the only thing you remember about the sweater five years later. Buy a sweater with no logo. Skip the rest.

A brief history

The wool sweater is, by some measure, one of the oldest pieces of clothing in continuous production. Wool has been knitted into garments since at least the 12th century, when Sicilian and Andalusian fishermen developed, independently, a method for knitting wool into close-fitting pullovers that could be worn, wet, under their oilskins.

The Shetland sweater, in its modern form, dates from the late 19th century, when the Shetland Islands' wool industry developed the distinctive rough, oily yarn that became, by the 1920s, the signature knitwear of the British upper class. The Shetland sweater is, by every measurement, the direct ancestor of the modern wool sweater. The cable-knit, the crewneck, the raglan shoulder — all of it comes from Shetland.

The Fair Isle sweater, a multicolored patterned knit developed on the Scottish island of Fair Isle in the early 20th century, became the signature knitwear of the 1920s British aristocracy and, by the 1950s, the signature knitwear of the American college student. The Fair Isle is, in every measurement, the most patterned of the British knit traditions. The Fair Isle is, in 2026, a sweater category where the pattern has, in my standard, completely overtaken the sweater.

The Aran sweater, a heavy cream-colored cable-knit developed on the Aran Islands off the west coast of Ireland in the early 20th century, became the signature knitwear of the Irish fisherman and, by the 1950s, the signature knitwear of the American east-coast prep. The Aran is, in every measurement, the heaviest wool sweater in production. The Aran is, in my standard, also too heavy for daily wear. The Aran is, by my standard, a sweater you wear three times a year to a specific kind of party.

The modern merino industry, dominated by Australian and New Zealand farms, developed the fine, soft, machine-washable merino yarn that became, by the 2010s, the signature knitwear of every startup founder in San Francisco. The Merino is, in every measurement, the most democratic of wool yarns. The Merino is, in 2026, the only sweater yarn you need. The Uniqlo $79 merino is, in my standard, the best expression of the modern merino industry.

How to care for it

Wool sweaters do not need to be washed after every wearing. Wool sweaters need to be aired, between wearings, on a wooden hanger, in a dry closet. The wool will, by chemistry, release most odors overnight. The wool will, by chemistry, recover most of its shape overnight. Wash the sweater every six to ten wearings. Wash the sweater less if you can.

Hand-wash the sweater in cool water with a wool detergent — Eucalan, Soak, or, if you cannot find either, a teaspoon of dish soap dissolved in a sink. Press the water through the sweater. Do not wring. Do not twist. Roll the sweater in a clean towel to remove the water, then lay it flat, on a second dry towel, in the shape it was before you washed it.

Reshape the sleeves. Reshape the shoulders. Reshape the neck. The sweater will, by morning, be dry enough to wear. Do not put the sweater in the dryer. The dryer will shrink the sweater by a full size at the shoulders and two centimeters at the hem, and the shrinkage is permanent.

Do not dry-clean the sweater. The chemicals in dry cleaning strip the natural lanolin from wool, and lanolin is, by chemistry, the only reason wool is, since the Bronze Age, the warmest fiber you can wear next to your skin. Dry-clean the sweater once a year, at most, when the wool has become too fragrant with you to put back in the closet.

Store the sweater, in summer, in a cotton storage bag. Do not store the sweater in plastic. The plastic traps moisture. The moisture breeds moths. Moths are not a moral failing; they are a fact of fabric. Cedar blocks, in the drawer, will do more for the sweater than any spray.

The honest summary

A sweater is, by every measurement that matters, the most underrated piece of clothing in any winter wardrobe. The sweater is the first thing you put on in November. The sweater is the last thing you take off in March. The sweater is also, by every measurement, the cheapest piece of clothing in my closet when measured by cost per wear.

What works for me: a single $79 Uniqlo merino crewneck, in a deep red, in a fit that fits, in a fabric that survives the wash. The sweater is, in 2026, the only sweater I wear every December. The sweater is, in 2026, the only sweater I need.

What does not work for me, and may not work for you: the idea that a sweater collection is a personality. The fourteen sweaters in my 2019 closet were, by my standard, a tax on my own anxiety about winter. The one sweater in my 2026 closet is, by my standard, a tool. The sweater industry has, by my measure, sold a generation on the idea that a sweater is something to collect. The sweater is, in my experience, something to wear.

Five winters and 280 wearings in, the Uniqlo red is, in every measurement that matters, still the sweater. The sweater has not pilled. The sweater has not shrunk. The sweater has, by my partner's description, "the patina of a sweater that has been somewhere." The sweater has been, in those five winters, to two funerals, three weddings, four hundred dog walks, and one December when I did not, for a single day, take it off. The sweater cost $79. The sweater is, by any honest accounting, the cheapest thing I own. The sweater is, by any honest accounting, the only thing in my closet I would save in a fire.

A good sweater is, in the end, not a fashion purchase. A good sweater is, in the end, a friend. Buy one. Skip the rest.