He’s Northern European and happily wears regular short sleeves in 17 degrees C. Next week it will be around 30, and he’s miserable and sweaty.
Pre-kids the solution was to stay inside with curtains closed and game. With a toddler to run after, he wants to go outside. What shirts & other clothes can you recommend that help making one feel cooler? There are tons that claim they can, but I would rather hear from lived experience.