the Men's Health team has tested more than 50 different underwear brands (and over 100 individual pairs), from buzzy upstarts like Skims, down to tried-and-true labels like Calvin Klein.

Of all the futuristic wonders Marty McFly could bring back to 1955, his purple Calvin Kleins were ... entire brand including women’s, men’s, jeanswear, underwear, and fragrance.