What to do: Pick a day when it's genuinely hot and humid. Wear a screen-printed tee for the morning, then switch to a DTG one for the afternoon. (If you don't own both, borrow from a friend or hit a store that lets you try—just don't buy blind.)

What to look for: Notice how the print feels against your skin. Screen print is usually a layer of plastisol ink sitting on top of the fabric—it can feel rubbery and trap heat. DTG ink is absorbed into the fibers, so the print area breathes almost like the rest of the shirt.

Success signal: If the DTG tee keeps you cooler and you forget you're wearing a print, that's your answer. If the screen-print tee doesn't bother you, don't let heat scare you off.