The Best Sweaters and Cardigans for The Women Who Care About Natural Fibers.

Sweater weather brings out two kinds of shoppers. There's the person who grabs whatever's soft and cute off the rack, and there's you — the one who flips it inside out to check what it's actually made of before it even touches your cart. I say this with love: that habit is going to save you so much money and closet regret this season.

Here's the thing about sweaters and cardigans specifically. They're the piece you'll wear the most between October and March, which means fiber content matters more here than almost anywhere else in your closet. A synthetic-heavy sweater pills, pills, and then pills some more. It traps heat weirdly, holds onto odor, and starts looking tired after a handful of wears. A well-made natural fiber knit, on the other hand, gets better with age. It's not really a mystery why one costs more than the other.

I went through six sweaters and cardigans this season with exactly one filter: real fiber content, not marketing language. Here's what earned a spot, what to know before you buy, and — because I'd want someone to tell me — one honest note about where "natural fiber" gets a little more complicated than the label suggests. All these knits are from & Other Stories, I have been loving them and their unique ability to offer high-end, runway-inspired design details and premium fabrics.

The One to Buy First: Merino Wool Wrap Cardigan ($99)

If you only add one piece to your closet this fall, make it this one. It's 100% merino wool, which means it's doing all the things good merino does — regulating your temperature instead of turning you into a furnace, resisting odor so you're not doing a full wash after every wear, and staying soft against skin instead of itchy. The wrapover silhouette with the self-tie detail gives it a shape that looks intentional rather than "I grabbed a cardigan," and the puff sleeves keep it from feeling like a basic layering piece you forgot about.

At $99 for 100% merino, this is genuinely a good price. Merino this pure usually runs higher, so I'd call this one slightly underpriced for what you're getting. This one quietly does its job without demanding attention, which is honestly the highest compliment I can give a cardigan.

The Splurge That's Worth It: Brushed Cashmere V-Neck Jumper ($299)

I'm not going to pretend $299 isn't a real number. But this one is 100% cashmere, certified under the Good Cashmere Standard, which means there's an actual accountability framework behind the fiber sourcing — not just a label slapped on for good vibes. The brushing gives it that slightly hazy, "I own this in every color" softness, and the V-neck with ribbed trims keeps the shape from reading sloppy.

Here's my honest take: cashmere this pure, at this price, is competitive. You'll see cashmere sweaters priced similarly with a much lower percentage of actual cashmere hiding in the blend. If you're going to spend real money on one sweater this fall, spend it here — not on something claiming "cashmere-feel" for two-thirds the price and a third of the fiber. Your future self, wearing this on a random Tuesday five years from now, will thank you.

It's dry clean only, so factor that into the true cost of ownership. That's not a dealbreaker, just something to know going in.

The Honest Middle Ground: Wool-Cotton Bouclé Jumper ($119)

This one's a nice example of a blend that's actually still 100% natural fiber — 63% wool, 37% cotton, no synthetic filler hiding in there. The bouclé texture gives it visual interest without trying too hard, and the subtle shoulder pads add a bit of structure so it doesn't just read as "cozy sweater" — it looks a little more finished than that. RWS-certified wool means the same accountability standard as the wrap cardigan above.

Wool-cotton blends like this tend to be a smart middle ground if straight wool runs too warm for you or straight cashmere feels precious for everyday wear. This is the one I'd reach for on a day I actually need to look put-together but don't want to think too hard about it.

The Everyday Layer: Wool-Cotton Jumper ($129)

This one's a quiet favorite. It's 68% wool, 32% cotton — both natural, no synthetic filler — knit in a half cardigan stitch that gives it a subtle stripe-melange texture instead of a flat, plain surface. The ribbed trims at the neckline, cuffs, and hem keep the shape from getting sloppy after a few wears, and the brown melange colorway is the kind of neutral that works with basically everything else on this list.

It's not trying to be the statement piece. It's the sweater you reach for on a random Tuesday when you just need something that looks good, feels good, and doesn't require any thought. That's a real category of clothing, and this fills it well.

The One I Just Love: Alpaca-Blend Knitted T-Shirt ($99)

I'll be straight with you on this one instead of pretending it's a purely rational pick: I just really love this top. The fit is exactly right, and the chartreuse colorway is one of those unexpected pops of color that makes a plain outfit look put-together without trying. It's a blend rather than a pure natural fiber (alpaca and wool make up about two-thirds of it, with some polyamide and spandex mixed in for stretch), so it's not the pick for anyone chasing 100% natural fiber content. But style-wise, it earns its spot here regardless. Sometimes a piece just works, and this one works.

The Reliable Layer: Rib-Knit Cotton Cardigan ($129)

Last one, and it's refreshingly simple: 100% cotton, no blend, no asterisk. The rib knit gives it some texture, and the cropped, relaxed silhouette with dropped shoulders makes it an easy throw-on over a tank or tee on the days that aren't quite sweater-weather yet but aren't warm enough to skip a layer either.

Cotton knits like this won't give you the warmth of wool or cashmere, so don't expect this to replace your heavier pieces. Think of it as the in-between piece — the one you reach for in early October or on a mild January afternoon when a full wool cardigan feels like overkill. No one needs six versions of the same heavy sweater; this fills a gap the others don't.

The Actual Takeaway

If you're building a natural-fiber sweater rotation this fall, here's how I'd rank spend versus payoff: the merino wrap cardigan for everyday wear and the best value on this list, the cashmere jumper if you're ready to invest in one true statement piece, and the wool-cotton bouclé jumper for the middle ground that still keeps its natural-fiber promise. The alpaca-blend pieces are lovely if you're comfortable with some synthetic content mixed in for fit and stretch — just go in with clear eyes about the composition. And the cotton cardigan is your reliable, no-drama transitional layer.

None of these need to be bought all at once. Pick the gap in your closet, read the tag before you check out, and let the rest fill in as the season goes. Quality over quantity isn't just a nice sentiment around here — it's genuinely the more cost-effective way to build a wardrobe that lasts past one season of wear.