When you are building a wardrobe that you aim to last for years to come, the fabric a piece is made from is one of the main qualities to look for. Two coats can look almost identical on a hanger and feel completely different on, hold up completely differently after a few seasons, and behave completely differently in the weather you are dressing for. Knowing which fabrics are worth reaching for in summer and which ones in winter is one of the quietest skills in dressing well, and it can save you from a lot of bad purchases along the way.
Here are the fabrics I lean on most, season by season.
In hot weather, the goal is breathability. Fabrics that let air move and pull moisture away from the skin are the difference between feeling polished and feeling miserable by lunch.
Cotton is the easy yes of summer dressing. It is soft, breathable, and forgiving in the heat, and it works for almost everything from a crisp button-down to a relaxed everyday dress. Heavier weights hold their shape, lighter weights drape more, and both wash and wear beautifully for years if you treat them right.
If cotton is the easy yes, linen is the obvious one in real heat. It is one of the most breathable fabrics you can put on your body, dries quickly, and stays cool against the skin. Yes, it wrinkles, but the soft, lived-in look is the point - and kind of a vibe? A linen piece that has been worn and creased a few times can look better than it did off the hanger. We don't always want wrinkles, but with linen, it can be a cool girl chic in the summer.
Lyocell is one of my personal favorites for summer. It is a plant-based fiber made from renewable wood pulp, with a smooth, cool feel and a beautiful drape. Some Lyocell, including the version made by Lenzing under the TENCEL name, is produced in a closed-loop process that captures and reuses its solvent, which makes it one of the more responsible synthetic-feeling fabrics on the market. Whether or not your piece is from a certified source, the fabric itself is soft, breathable, and ages well.
Chambray gives you the look of denim without the weight. It is woven from cotton, usually with a blue warp and white weft, which gives it that classic denim color in a much lighter, more breathable hand. Great for summer shirts, easy dresses, and anywhere you want the casual blue look without the heat.
This category is more nuanced than most articles let on. Rayon and viscose drape beautifully and feel airy in the heat, and at their best they are a real pleasure to wear. But the cheaper end of this category is one of the most common ways fast fashion brands cut corners, so quality varies a lot. Look for heavier weights, a smooth and even hand, and ideally a recycled version. A well-made viscose blouse can be a wardrobe favorite for years. A cheap one will pill and warp by the end of the summer.
One thing to know: rayon and viscose are semi-synthetic, made from natural plant pulp that goes through a chemical process to become fiber. If you avoid synthetics altogether, these are not for you. If your concern is more about sustainability, look for garments made from recycled rayon or recycled viscose, which puts existing fibers back into circulation rather than creating new ones.
Winter fabrics need to do the opposite job. The goal here is insulation without bulk, warmth without itch, and pieces that look as polished as they feel.
Wool is the workhorse of cold-weather dressing. It insulates even when slightly damp, breathes well enough that you don't overheat indoors, and resists odors in a way most fabrics don't. You will find it in tailored coats, trousers, and knits, and a well-made wool piece can genuinely last decades.
Cashmere earns its reputation. It is much lighter than regular wool, several times warmer for its weight, and incredibly soft against the skin. The catch is that quality really matters here, since cheap cashmere pills almost immediately. When you do find a well-made cashmere sweater, scarf, or wrap, it is the kind of piece you reach for every winter without thinking.
Merino is finer and softer than standard wool, which makes it a great choice for layering pieces, lightweight sweaters, and anything worn close to the skin. It also regulates temperature unusually well, keeping you warm in the cold without overheating indoors, which is something most other winter fabrics cannot quite manage.
Flannel is just a fabric that has been brushed to raise its fibers, which traps more air and makes it warmer and softer to the touch. It can be made from cotton or wool, both work, and it is one of the easiest ways to add real coziness to a winter wardrobe without going full bulky.
For technical outer layers, fleece and down are still the best at what they do. Fleece traps heat at very little weight, and down has one of the highest warmth-to-weight ratios of any insulation. If you live somewhere genuinely cold, these are not optional, they are the foundation of staying functional outdoors.
All of these winter fabrics genuinely perform, and we know plenty of well-loved wardrobes are built around wool, cashmere, and down. Honestly, most of us probably have pieces like that in our own closets too. For Triplicity specifically though, we don't plan to use wool, cashmere, down, or other animal-based fibers in what we produce. It comes down to a personal choice about how we want our designs to come together, and we'd rather build the brand around fibers that don't involve animals. That is just where we are landing as we grow.
No judgement here either way. Plenty of people make different choices for good reasons, and warm clothing is warm clothing. We just want to be upfront that if you are looking through a Triplicity collection, you are not going to find these particular fabrics in it.
If you are looking for warm winter pieces without animal fibers, there are real options that perform well. Some are obvious, some are underrated, and some people just have maybe not thought to look for them.
Cotton is not usually the first fabric people associate with winter, but in heavier weights it absolutely earns a spot. Cotton drill, canvas, and dense twills work beautifully for fall and winter coats, structured jackets, and trousers, especially when paired with a good lining. It is not the warmest fabric you can wear, but in layered or lined pieces it does the job and ages well for years.
Flannel is just brushed fabric, and you don't need it to be wool to get the warmth. Cotton flannel and other brushed cotton weaves trap air the same way, which makes them warm and soft against the skin. It works for shirts, sleepwear, easy layering pieces, and any time you want that cozy hand without using wool.
Linen has a reputation as a summer fabric, but the heavier weights and the blends (linen with cotton, hemp, or even some recycled fibers) are great for transitional weather and milder winters. Linen pieces tend to drape with weight and structure, last for years, and look more refined than most cold-weather basics. Worth a look if you live somewhere with a real autumn but not a brutal winter.
Hemp is one of the most underrated fabrics in clothing right now. It is naturally insulating, incredibly durable, breathable, and gets softer with every wash. It is also one of the most low-impact fibers you can produce, since hemp grows fast and uses very little water. You will not find it everywhere yet, but more intentional brands are starting to use it, and a well-made hemp piece will likely outlast almost anything else in your closet.
For genuinely cold weather and outer layers, polyester (we prefer recycled) does the same job as down without using animals. You will find it in padded jackets, coat linings, and as the warmth layer inside outerwear. Look for the words "recycled polyester" on the label rather than just "polyester" if sustainability matters to you, since virgin polyester is one of the most produced and least responsibly made fibers in the industry. Several of our own pieces use recycled polyester for exactly this reason: it keeps existing fibers in circulation rather than producing new ones, and at heavier weights it performs as well as the alternatives.
If you take the same exact silhouette and make it from a cheap fabric vs. a good one, the difference will be obvious, both visually and physically. Cheap fabric pills, stretches out of shape, fades, and loses its hand after a few washes. Good fabric actually does the opposite, it softens, drapes better with wear, and starts to feel like a piece will have maybe, forever.
At Triplicity, this is how we start when we design. Every piece starts with a fabric chosen for how it will feel, wear, and last over years rather than a season. Several of our styles use recycled polyester and recycled rayon to keep existing fibers in circulation rather than producing new ones, (we do not want to add more clothing to landfills)! And our linings and dresses use cotton or lyocell blends chosen for breathability and longevity.
The shortcut for building a wardrobe that works year-round: buy fewer pieces, choose better fabric, and let the materials do the heavy lifting. Feel free to reach out if you have any questions!
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