Everything in the world can be divided into two categories: the things that get better with age (wine, The Mary Tyler Moore Show) and the things that don’t (Joan Rivers, mayonnaise).

You’ve always preferred the former.

And at the top of that list? Perfectly worn-in T-shirts. Too bad it takes so many long, hard years of wearing, washing, and trying not to lose them just to get them to favorite-tee status.

Nation Ltd.’s T-shirts are brand new but look like they’ve been yours since the beginning of time — and they keep getting better. Each style — there are eight variations on the basic tee and a sweatshirt — has potential staple status, thanks to simple cuts; subtly frayed hems around the neck, arms, and bottom; and saturated colors that have been mellowed using an enzyme wash that also leaves the 100-percent-cotton tops super soft.

Especially covetable are the tees in the Candy Striped collection. Like the others, special care has been taken to speed up the aging process. So you can get that lived-in look without all the hard living.

Because, sure, you plan to improve with age. But that’s no reason to rush things.

Available online at nationltd.com.