You've Got 25% Off
Summer Sale
23
HR
:
MIN
:
SEC
30,000+ Sold
6 Reasons America Is Ditching Polyester For Seaweed
Softer than polyester. 3x more breathable. Zero microplastics per wash. Made from regeneratively farmed Icelandic seaweed. Meet SeaCell. The best kept secret in natural fiber.
Try SeaCell Risk-Free
30-Day Money Back Guarantee
30-Day Money Back Guarantee
Lifetime Repair Guarantee
Lifetime Repair Guarantee
Proudly Crafted In New Jersey
Proudly Crafted In New Jersey
How Does SeaCell Stack Up?
Breathability
Softness
Moisture Control
Moisture
Control
Odor Control
Odor
Control
Microplastics
Oliver Charles
SeaCell
3x more
breathable
Unbelievably
soft
Wicks
30x better
Stays
fresh
Zero
per wash
Polyester
T-Shirts
Traps
heat
Feels like
plastic
Stays
clammy
Smells in
hours
7,000+
per wash
Polyester pollutes and underperforms. Our SeaCell is better across the board.
1. Most Clothes Are Made From Plastic. Seaweed 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 seaweed alternative.
2. Made From Seaweed. Yes, Really.
The seaweed in SeaCell is regeneratively farmed in the clean, remote Icelandic fjords. Local farmers trim only the very tops of each plant once every four years. The beds grow back naturally every time, larger than before. No fresh water. No pesticides. No arable land. From there it is spun into a silky soft yarn using a closed-loop process that recycles 99% of everything used. A fiber that comes from nature and returns to it completely.
3. Cooling And Breathable On 85°F Days.
SeaCell is 3x more breathable than polyester and pulls sweat away from your skin 30x better. Add a UPF 50+ rating and you are covered in direct sun without a second layer. No more overheating an hour into wearing it. No more clamminess that makes you regret putting it on. Lightweight enough for July, polished enough for the office, and versatile enough to replace five pieces you already own.
4. Shipped In Packaging Made From Seaweed.
The T-shirt deserved packaging that matched what was inside it. So we partnered with Sway, a company growing compostable alternatives to plastic out of seaweed. Every shirt ships in a seaweed-based bag that can be composted at home instead of sitting in a landfill for 200 years. The seaweed in the bag is farmed in the ocean, same as the shirt. No fresh water, no farmland, no pesticides. We think that matters.
5. The T-Shirt That 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 T-shirt takes 200 years to break down. SeaCell offers the same durability and comfort, performs better on your skin, and leaves nothing behind except a seaweed bed that grows back larger than before.
6. The Bundle Hack.
Here is how it works. We give 25% off any order of three or more items. Add three T-shirts and take 25% off your order. It does not have to be only T-shirts. Mix in a pair of SeaCell socks or a SeaCell sweater and it still counts. No code needed. Just add and save.
Summer Sale
Up to 25% Off. Limited Time.
You have been looking for a T-shirt like this. Now is the best time to get it.
Try SeaCell Risk Free
30-Day Money-Back Guarantee
Lifetime Repair Guarantee
Never Irritates, Never Lets You Down.
Most T-shirts have rough fibers that irritate, and a synthetic feel that gets worse all day. Our SeaCell T-shirts are different at a fiber level. SeaCell is naturally smooth and gentle, making it ideal for sensitive skin, synthetic textile allergies, and heightened tactile sensitivity. The T-shirt you reach for every morning without thinking.
Lasts a Lifetime, Guaranteed.
SeaCell fiber is already 2x stronger than cotton. Then we hand it to people who take quality seriously. Our T-shirts are proudly crafted in a woman-owned factory in New Jersey, opened just as the rest of American apparel was leaving for cheaper labor overseas. She stayed. What began as a sewing table and a dream is now run by her son and employs hundreds of Americans. You do not last that long by being cheaper. You last by being better. That is why ours holds its shape long after a cheap tee goes thin. Backed by a lifetime repair guarantee.
Risk Free With Our Money Back Guarantee
We are confident this will be the best T-shirt you have ever owned. If it is not, we will make it right. Every Oliver Charles T-shirt comes with a 30-day money-back guarantee and a lifetime repair policy. Free and easy returns and exchanges.
Over 30,000 Sold. Travel-Tested in 40+ Countries.
Oliver Charles SeaCell T-shirts are at their lowest price of the year right now. Join thousands of travelers, minimalists, and natural fiber enthusiasts who decided one great T-shirt beats a drawer full of average ones.
Customer Reviews
4.8/5.0 (Based on 1,000+ reviews)
I was skeptical about the seaweed. Now I'm ordering a second
"Traditional wool always left me itchy and uncomfortable. After wearing this for the first time I was genuinely surprised. Incredibly soft, lightweight, and cool to the touch even on the hottest days. I'm buying another one in a different color."
Chris W. | Verified Customer
I break out in almost everything. Not this one.
"I opened the package after traveling and wore it to the office the next day, without washing it. Usually I have to wash clothes before wearing them because I am allergic and break out in a rash. It feels very soft and comfortable, not clingy, and it fits perfectly. I did yoga in it at noon and it stayed in place for downward dog. Love that it is made without any synthetic plastic fibers."
Cynthia B. | Verified Customer
I've hiked in it, worked in it, and worn it on the hottest days
"This is my favorite T-shirt. Something I look forward to wearing when I get to pick it out of my drawer. Super soft, great feel, drapes awesomely. It's a little more substantial than a standard tee, so it's great for slightly dressier moments, but it's awesome to wear for rugged adventure as well. I've hiked in it, gone to work in it, worn it on really hot days, and had it under a rain jacket. Always really comfortable. Dries quick."
Brad S. | Verified Customer
Now I own five of them
"I have often made the mistake of buying cheap clothes. I know in theory that I should buy better quality. This time was different. I bought one because I was intrigued. It was great, so I bought two more. Then two more. Now I have five. I'm sold on buying higher quality clothing."
Lorraine W. | Verified Customer
The fit and feel were just what I'd hoped. So was the service.
"I was delighted with my T-shirt. The fit and feel were just what I'd hoped. I also found the company very helpful. I'd placed the order planning to wear the tee to a specific event. The delivery time was tight, but when I enquired, co-founder Slater responded and I had the shirt the next day."
Karen E. | Verified Customer
Frequently Asked Questions
What's SeaCell feel like?
Silky, soft, and lightweight against your skin. Where wool has natural texture and polyester can feel plasticky and irritating, SeaCell fibers are exceptionally smooth and gentle, making them ideal for sensitive skin, synthetic textile allergies, or heightened tactile sensitivity. Our seamless construction takes it further with zero seams and zero irritating ridges. Most customers describe it as the most comfortable T-shirt they have ever owned.
How do I wash it?
Oliver Charles SeaCell T-shirts are machine washable and machine dryable. We recommend reviewing the care label to make sure your T-shirt lasts forever.
Really? Seaweed?
Yes. The seaweed used is called Ascophyllum Nodosum, harvested from the clean fjords of Iceland once every four years.
Is SeaCell sustainable?
SeaCell has earned over 16 environmental certifications including OEKO-Tex Standard 100, Forest Stewardship Council, USDA Biobased, and Vincotte Composting. It is 100% biodegradable, regeneratively farmed, and produced without toxic chemicals. The seaweed beds it comes from have grown healthier every year since harvesting began.
Can I wear this at 85°F?
Yes. SeaCell is 3x more breathable than polyester and pulls moisture away from your skin 30x better. It shields against the sun with a UPF 50+ rating and layers perfectly against aggressive AC. Customers in Florida, Southern California, and Houston have worn it comfortably through summer. It is lightweight enough to wear in July and breathable enough to keep you comfortable all day.
Return and repair policy?
30-day money-back guarantee and a lifetime repair policy. We offer free returns and exchanges. If your Oliver Charles T-shirt ever needs attention, we will fix it.
30,000+ Sold
Shop The Summer Sale