Everlane's Box Cut Tee is made with super-soft, lightweight cotton that won't thin out much over time. These are my go-to white T-shirts for every occasion, whether I'm tucking them into jeans and ...

Ideally, a white T-shirt must be 100 percent cotton, but I have tried some that are made from hemp-and-linen blends. I find that these wrinkle too easily and the hems distort with washing.