Yeah, they don't overheat easily, if it's less than about 20 inside they're very comfortable for me, tolerable up to maybe 23. But they still make a huge difference outdoors or when it's cold inside. I wear mine to/at work, we have the office at 19 I believe.

They don't require a lot of washing, they still smell fine after 4-5 wears if you don't, like, exercise in them. Downside is they do need to be washed with wool detergent rather than normal laundry powder/liquid, but that's not a huge deal.