A:Answer They are sweat proof, so I feel as if the sauna would fall under the category of that since they will not be submerged in water. I think the only thing to be weary of is the headphones shutting off after to long of heat exposure, they will come back on after they cool down. I’ve used about 10 different headphones and earbuds, including water proof Sony, and this seems to be the case with them all.
