What is the best white t-shirt that is not see-through?

Best overall: entity["brand","Uniqlo U"] Crew Neck T-Shirt — thick enough for everyday wear, holds shape well, and is widely praised as a non-see-through white tee.www.whowhatwear.com

Other strong picks:

• entity["brand","COS"] Clean Cut Regular T-Shirt — heavyweight organic cotton, structured, very opaque.www.whowhatwear.com
• entity["brand","House of Blanks"] Heavyweight T-Shirt — 275 GSM combed cotton; excellent if you want maximum coverage.
• entity["brand","Buck Mason"] Field-Spec Cotton Tee — premium heavyweight option with a substantial feel.highr.co+1

Look for 100% cotton, ~220+ GSM fabric for a white tee that avoids the transparent “undershirt” look.highr.co+1

Finding a truly opaque white t-shirt means looking for heavyweight cotton (usually anything above 200 gsm—grams per square meter) with a tight knit.

Top-rated, heavily vetted white t-shirts known for being completely non-see-through include:

Frequently praised by fashion reviewers as one of the best value-for-money thick tees. It has a structured, substantial feel that completely masks what's underneath without feeling stiff. Available on Abercrombie & Fitch.

Known for its crisp, bright white heavyweight organic cotton. It features a slightly boxy, modern drape and a thick ribbed collar that looks high-end and opaque. Check options on COS.

Buck Mason specializes in rugged, heritage-inspired basics. Their heavier cotton options use tightly wound yarns that provide a dense, zero-transparency finish. Explore styles on Buck Mason.

If you want the absolute tank of white t-shirts, American Giant's heavyweight line is double the weight of a standard tee. It's 100% ringspun cotton, rigidly opaque, and built to last for years. View it on American Giant.

A cult-favorite among minimalist menswear enthusiasts, made in the USA from a beefy, dry-hand cotton jersey that completely eliminates transparency. Find it at Lady White Co..[1]

To help narrow this down, let me know:

• Are you looking for a men's or women's cut?
• Do you prefer a slim, regular, or oversized/boxy fit?

If your #1 priority is a white T-shirt that isn’t see-through, I’d look for heavyweight cotton around 200–300 GSM. That’s substantially more opaque than the thin white tees that tend to show a bra or undershirt.Somnad+1

My top picks

• House of Blanks Heavyweight T-Shirt - $35.00 (House Of Blanks)

• Shaka Wear Max Heavyweight T-Shirt - $24.99 (Nordstrom)

• lululemon Heavyweight Cotton Jersey Boxy T-Shirt - $49.00 (lululemon)

• Shaka Wear Heavyweight Oversize Tee - $24.99 (Nordstrom)

• House of Blanks Heavyweight T-Shirt — $35: 275 GSM combed cotton, which is right in the sweet spot for opacity without being absurdly thick. This would be my pick if you want a clean, high-quality basic rather than a streetwear look.

• Shaka Wear Max Heavyweight — ~$25: Very dense and opaque, but noticeably more oversized/heavy. Great if you like a substantial, structured tee.

• lululemon Heavyweight Cotton Jersey — $49: A more polished option if you want something softer and less "heavyweight streetwear."

• Shaka Wear 7.5 oz Oversize — ~$25: Another very opaque option, particularly if you like an oversized silhouette.

For women's sizing/fit, I'd actually put the Uniqlo Crew Neck high on the list: Women's Health specifically tested it and found the white fabric completely opaque, thick and substantial, while still breathable, at under $20.Women's Health

If you tell me women's or men's, fitted or relaxed, and your budget (e.g. under $30 / $50 / price doesn't matter), I can narrow it down to the single best one for you.

If your #1 priority is a white T-shirt that genuinely isn’t see-through, I’d look for heavyweight cotton rather than a thin “premium” tee. Recent testing specifically found the Uniqlo Crew Neck T-Shirt to be thick and completely opaque, while COS’s heavyweight options are even more substantial.Women's Health+1

My picks

For women: Uniqlo Crew Neck T-Shirt — best overall value

It’s 100% cotton, substantial without being excessively heavy, and recent testing found it completely opaque. It’s also under $20, which makes it an unusually good combination of coverage and price.Women's Health

For a more polished/structured look: COS Clean Cut Regular T-Shirt

This is the one I’d consider if you want something that looks more expensive and tailored. It uses heavyweight organic cotton and has been specifically praised for being opaque and retaining its shape after repeated washing.Women's Health

For men/unisex: Banana Republic Heavyweight Cotton Crew-Neck

• Men's Heavyweight Cotton Crew-Neck T-Shirt - $50.00 (Banana Republic)

At 320 GSM, this is substantially heavier than a typical T-shirt, so it's a strong choice if transparency is your biggest concern.

If you want very heavy/maximum coverage: House of Blanks 1009

• 1009 Heavyweight T-Shirt - $35.00 (House Of Blanks)

It's 275 GSM heavyweight combed cotton, giving you a much denser fabric than typical white tees.

One thing I'd specifically look for

Aim for roughly 190+ GSM if you want a noticeably opaque white tee; around 220–300 GSM is the safer zone for very high coverage.Somnad+1

If you tell me women's or men's, fitted or relaxed, and your budget (e.g. under $30 / $50 / $100), I can narrow it down to the 3 best options you can buy right now.

The overall winner for the best non-see-through white t-shirt is the Reformation Classic Crew Tee , which balances 100% opaque, structured cotton without feeling overly heavy.tiktok.com+1

Finding a truly opaque white tee depends on your preferred fit, budget, and fabric weight. Here are the top-tested options available right now:

Best Overall: Reformation Classic Tee ($48) features structured, 100% heavy-weight organic cotton that provides total opacity while maintaining a tailored, flattering shape.

Best Budget Option: Uniqlo Crew Neck Short-Sleeve T-Shirt ($15–$25) uses a thicker, tighter cotton weave designed specifically to be completely non-see-through with a clean, slightly boxy fit.

Best Fitted Style: Skims Cotton Jersey T-Shirt ($48) offers a form-fitting silhouette made of 90% cotton and 10% spandex. While slightly lighter in weight, the tight stretch hug keeps sheerness minimal.

Best Heavyweight Boxy Fit: Uniqlo U AIRism Cotton Oversized Tee ($25) is a favorite for a roomier, thicker drape that completely masks undergarments through heavy-duty fabric construction.reddit.com+2

If you can tell me whether you prefer a fitted or oversized fit and your approximate budget , I can narrow down the exact style recommendation for you.

If your #1 priority is a white T-shirt that genuinely isn’t see-through, I’d narrow it down to these:

• Abercrombie Premium Heavyweight 2.0 Tee - $29.99 (Abercrombie & Fitch)
• COS Heavyweight Ribbed T-shirt - $49.00 (Nordstrom)
• House of Blanks Heavyweight T-Shirt - $35.00 (House Of Blanks)
• Sunspel Women's Boxy Heavyweight T-Shirt - $110.00 (Sunspel US)

My top picks

• Best overall for women: Uniqlo Crew Neck T-Shirt — around $20. Women’s Health specifically found it completely opaque, with thick, substantial 100% cotton, while still being breathable.Women's Health
• Best polished/structured: COS Clean Cut Regular T-Shirt — $45. Heavyweight organic cotton, structured and opaque; especially good if you want something that looks elevated rather than like a basic undershirt.Women's Health
• Best fitted/shrunken: Madewell Northside Vintage Tee — editors rated its opacity 4.5/5, and it has a flattering slightly shrunken fit rather than a boxy silhouette.Yahoo Shopping
• Best truly heavyweight:

— a premium option if you want substantial fabric without sacrificing softness.

If you want just one: I'd get the Uniqlo Crew Neck. It's the best combination of opaque + comfortable + inexpensive + normal-looking, rather than being so thick that it feels like a sweatshirt.Women's Health

If you tell me women's or men's, fitted or oversized, and your budget (e.g. under $30 / $50 / $100), I can narrow it to the single best one for you.