This is a serious matter. We’ve all been there, too, contemplating the hot-man-in-summer dilemma: Will I sweat more, or will it show through my dress shirt less, if I wear an undershirt?

Yes, You Need to Wear an Undershirt. No, a Regular T-Shirt Won’t Do. There’s an art to a good base layer. A guide to the materials and cuts men should look for—and how much they should spend.

The best undershirt brand for men that we’ve found is Tommy John. The brand’s signature ‘Stay Tuck’ design makes it practically budge-proof, while its slim fit provides a smoothing layer ...

A sweat-proof undershirt can prevent unnecessary pit stains. Based on fit, cut, and material, we have rounded up the best undershirts for men.