@DarkTrig @Bob_Wachter I've worn them for 10 hours at least probably longer, didn't find it hot. But again, comfort is subjective, people perceive it differently.
Having masks available to use is a good point, and better than no mask, true!
Then again, I'd suggest you plan on more wildfires.
@DarkTrig@Bob_Wachter我已经穿了至少10个小时了，可能更久了，没觉得热。但同样，舒适感是主观的，人们对它的看法不同。
有口罩可供使用是一个很好的观点，而且总比没有口罩好，真的！
再说一遍，我建议你计划更多的野火。