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30,000+ Sweaters Sold
6 Reasons America Is Ditching Polyester For Yak Wool
Softer than polyester. 5x better thermoregulation. 3x more odor resistant. Zero microplastics per wash. Meet yak wool. The best kept secret in natural fiber.
Try Yak Wool Risk-Free
30-Day Money Back Guarantee
30-Day Money Back Guarantee
Lifetime Repair Guarantee
Lifetime Repair Guarantee
Proudly Knit In Brooklyn, New York
Proudly Knit In Brooklyn, NY
How Does Yak Wool Stack Up?
Breathability
Warmth
Moisture Control
Moisture
Control
Odor Control
Odor
Control
Microplastics
Oliver Charles
Yak Wool
3x more
breathable
5x better
temp-control
Wicks
30x better
Fresh for
weeks
Zero
per wash
Polyester
Sweaters
Traps
heat
Fails
when wet
Stays
clammy
Smells in
hours
7,000+
per wash
Polyester pollutes and underperforms. Our yak wool is better across the board.
1. Most Clothes Are Made From Plastic. Yak Wool Changes That.
60% of all clothing is made from plastic yarns like polyester. Every time you wash them, they shed 7,000+ microplastic fibers that end up in the ocean and in your food. Most people have never thought of their wardrobe as a plastic problem. Now you can't unthink it. Meet the yak wool upgrade.
2. Cashmere Soft. Zero Plastic.
Switching from polyester to natural fiber does not mean trading comfort for conscience. The fine wool undercoat of the Tibetan yak, sits between 14-19 microns, the same softness range as Grade A cashmere. It has a soft, buttery, cloud-like feel. No itch. No scratchiness. No synthetic irritation. The sweater you will reach for every morning without thinking.
3. Wear It All Week. Wash It When You Actually Need To.
Polyester traps sweat on the surface where bacteria thrive. The result is a sweater that smells within hours. Yak wool fibers are naturally antimicrobial, stopping bacteria before odor even has a chance. That is why days of wear feel as fresh as the first. Oliver Charles field testers have worn their yak wool sweaters for 30 days straight. The only reason they washed it was to prove they could.
4. Machine Washable Wool. Yes, Really.
Polyester is easy to care for. You do not have to give that up with this natural fiber. Most wool sweaters shrink, felt, and can't survive a spin cycle. Oliver Charles Yak Wool All-Season Sweaters go straight in the wash. Whether you are traveling carry-on only, managing a busy schedule, or just done treating your clothes like they are fragile, the last thing you need is a sweater with a care routine.
5. One Sweater. Every Season.
One sweater for the cold commute, the warm office, the autumn weekend, and the spring hike. Yaks live at 15,000 feet, where temperatures swing from -40 to 90 degrees. Their fiber evolved to handle that entire range. Yak wool sweaters are 5x better than polyester at thermoregulation. Travelers pack it carry-on only for weeks. Minimalists call it the only sweater they need.
6. The Bundle Hack.
Here is how it works. We give 25% off any order of three or more items. Add a Yak Wool All-Season Sweater and two pairs of socks. The sweater does the heavy lifting. The socks end up being free. And you still walk away with money off the sweater. No code needed. Just add and save.
Spring Sale
Up to 25% Off. Limited Time.
You have been looking for a sweater like this. Now is the best time to get it.
Try Yak Wool Risk Free
30-Day Money-Back Guarantee
All-Season Sweaters Ship Free
Lifetime Repair Guarantee
Why Customers Choose Oliver Charles
Lasts a Lifetime, Guaranteed.
Polyester sweaters are designed to be replaced. Ours last a lifetime. Yak fiber is naturally more durable than other wool. Then we make it even stronger. Every Oliver Charles sweater is knit seamlessly in the USA using a Japanese technique refined over 100 years. One continuous piece of fabric means no seams, no failure points, no irritating ridges. Just a sweater that gets better with every wear. We back every sweater with a lifetime repair guarantee.
Costs the Planet Less.
Polyester is made from petroleum. Every year the fashion industry consumes 350+ million barrels of oil to create polyester and releases 8+ million tons of plastic into the ocean. And every polyester sweater takes 200 years to break down. Yak wool comes from free-roaming yaks that shed naturally every spring, and herders comb the fiber out by hand. No shearing. No confinement. Oliver Charles sources from a fully traceable Tibetan cooperative. In the last decade alone, they have regenerated 1,600 football fields of grassland. Every sweater helps fund that.
Saves You Hundreds On Replacing Sweaters That Don't Last.
The hidden cost of polyester is not what you pay for it. It is what you pay to replace it. Stop replacing sweaters that disappoint within a season. Seamless construction and stronger yak fiber mean no more seasonal replacements, no more disappointing declines, no more spending on sweaters that should have lasted. Buy it once. Own it for years.
Over 30,000 Sweaters Sold. Travel-Tested in 40+ Countries.
Oliver Charles Yak Wool Sweaters are at their lowest price of the year right now. Join thousands of travelers, minimalists, and natural fiber converts who decided one great sweater beats ten average ones.
Customer Reviews
4.8/5.0 (Based on 1,000+ reviews)
Switching away from polyester for good
"I was looking to replace a favorite synthetic sweater that had gotten shaggy after a year of heavy use. It appealed to me to buy something Earth-friendly and made in the USA. It needed to perform as promised. Soft, not pill, retain its shape with heavy use. Bottom line: it has simplified my life just like I hoped. On particularly cold days this sweater under my coat kept me warm. With a synthetic sweater I was cold. I am looking forward to my next Oliver Charles sweater."
Theresa J. | Verified Customer
No seams make it a very smooth fit and feel
"I need clothes that are soft and move with me as a toddler mom. I was skeptical I could wear this seven days without a wash. The sweater held its shape, never smelled, and toddler gunk wiped off with a baby wipe. The lack of seams was a beautiful surprise for my sensory needs. Wearing the same thing every day was a relief, not a sacrifice."
Nickolette C. | Verified Customer
Traveled in it for 26 days straight
"I pack light. Whether it's a 2-day trip or a 2-week trip this sweater handles it all with ease without needing to be washed. I wore it for 8-12 hours a day for 26 days straight before washing. I have noticed recently that the quality of clothing has gone down and looks old and worn within 6 months. I am much better off investing in quality pieces that will last a really long time. I would recommend this sweater to anyone who wants to reduce the amount of clothing they own or pack light."
Catherine T. | Verified Customer
Nicest sweater I have ever purchased!
"I discovered Oliver Charles while researching merino wool sweaters in an effort to travel more minimally. The price point was much higher than I anticipated but I was in search of a quality sweater that could take me from day hiking in the mountains to an evening at dinner. I gave it a chance and I'm so happy I did. I'm honestly not sure I need a single other sweater in my closet."
Heather M. | Verified Customer
Game changer in downsizing my wardrobe
"I wore it at -6 degrees with one layer and at 75 degrees without issue. Over 35 days I hiked 230 miles in it, slept in it camping twice, and tested it in damp forests, breezy coastlines, and everything in between. It came out still looking beautiful. Never too hot. Never too cold. I just ordered my second one. Highly recommend to anyone wanting to switch away from hormone disrupting synthetic fabrics."
Juli Y. | Verified Customer
Frequently Asked Questions
Is it better than polyester?
Yes. Yak wool outperforms polyester. Polyester is made from petroleum, sheds thousands of plastic microfibers every time you wash it, and takes 200 years to break down in a landfill. It cannot regulate your body temperature, it traps odor-causing bacteria on the surface, and it gets worse with every wear.
Yak wool does the opposite. It thermoregulates actively, staying warm when you are cold and cooling when you are warm in a way polyester is physically incapable of doing. It stays fresh for weeks without washing because the fiber naturally isolates bacteria rather than feeding it.
Natural fibers are what clothes used to be made from before plastic took over. And they are better.
Is it soft?
Yes. Oliver Charles yak wool sits at between 14-19 microns in fiber width, the same range of Grade A cashmere. Most customers who expect a compromise on softness are surprised.
How do I wash it?
Oliver Charles All-Season Sweaters are machine washable. We recommend reviewing the care label to make sure your sweater lasts forever.
How are they seamless?
Each sweater is knit as one seamless piece of fabric using a Japanese technique refined over 100 years. No seams, no waste, no failure points. And the seamless 3D construction means zero seam irritation. Customers with sensory issues say it's the first sweater they can wear all day.
Where is yak wool from?
From Shokay, a fully traceable Tibetan cooperative. The yaks are raised by nomadic herders on the Tibetan Plateau. Every spring they naturally shed their fiber. The herders comb it out.
Is yak wool sustainable?
Wool is a 100% regenerative material and naturally shed. Being a natural material, wool biodegrades in just a few months vs. up to 200 years in the case of plastic-based fibers. Wool is also self-cleaning, meaning it will release bacteria and odor even in a cold wash, which is great news because 25% of the carbon footprint of clothing comes from its lifespan of care.
Can I wear it year round?
Yes. Yak wool is 30% warmer than merino and 2x more breathable than cashmere. Oliver Charles customers wear their sweaters across all four seasons, from Colorado winters to humid Southern summers.
Return and repair policy?
30-day money-back guarantee and a lifetime repair policy. We offer free returns and exchanges. If your Oliver Charles sweater ever needs attention, we will fix it.
30,000+ Sweaters Sold
Shop The Spring Sale