Perhaps they'd like to check in with every human being prior to the 1920s who wore plenty more clothing than the Hasidim and managed to survive.
Saw one of these guys yesterday out in the Atlanta suburbs. Over 100, heat index about 110, and heading towards the synagogue 1.5 miles away. I admire the dedication, but he looked miserable.
And the many who did not.
these guys live in my neighborhood. Or I live in their neighborhood. Either way, the fabric is really light - you can almost see through it. Speaking of my neighbors - why do hipsters wear wool hats in 95 degree weather?