My review: It’s in the name: This slim shirt from Cos is indeed ultra-slim. The close fit makes it the ideal layering piece, as it won’t bunch under sweaters—plus, as the longest top I tried ...

$25. $10. Buy on Amazon. This crewneck top is the best-selling new piece of clothing at Amazon, and it’s currently marked down by 60 percent. Its hem hits below the waist, and it has a slim fit ...

My review: The perfect white long-sleeve shirt does exist, and it is, in fact, this ribbed one from Banana Republic. For me, this ticks all the boxes: It’s slim but not constricting, lightweight ...

The best men’s long-sleeved T-shirt overall is Gildan’s 2400. Our wardrobe-basics writer interviewed more than ten stylish people and tested their recommendations herself.

Right now, Amazon is selling Real Essentials Men's Dry-Fit Long Sleeve Shirts with Sun Protection (4 Pack) for $35. That's 30% off the original list price of $50.

Everlane’s The Air Long-Sleeve Tee is the best long-sleeved T-shirt for women, according to our style writer, who also found fitted, seamless, and ribbed styles.

The Non-Iron Stretch comes in three cuts (extra slim, slim, and classic), 12 collar sizes (14.5 to 21, the equivalent of XS to 5XL), and four sleeve lengths (32 to 36).

Though most under-$15 shirts we tested were pretty lousy in terms of both fit and quality, the Hanes Perfect-T Women’s Short Sleeve Cotton T-Shirt was the notable exception.“The price is right ...