That only works if by “hot” days you mean “comfortably warm”. For actually hot weather, it’s gonna have to be evaporative cooling (sweat) and even then it gets pretty uncomfortable unless you’re going at a leisurely pace IMO.
And if its hot and humid you’re screwed. I love being physically active but i literally need to bring a second shirt if its warmer than 25C and even just a little humid. Especially if i have a backpack which i almost always do. I can wring the sweat out of the back of my shirt after 20 minutes on days like that.
That only works if by “hot” days you mean “comfortably warm”. For actually hot weather, it’s gonna have to be evaporative cooling (sweat) and even then it gets pretty uncomfortable unless you’re going at a leisurely pace IMO.
And if its hot and humid you’re screwed. I love being physically active but i literally need to bring a second shirt if its warmer than 25C and even just a little humid. Especially if i have a backpack which i almost always do. I can wring the sweat out of the back of my shirt after 20 minutes on days like that.