I llive in New Delhi, India. Dengue fever is prevalent from September to December. I wear nothing but Insect Shield clothing during this time(I've already had dengue once and it is supposed to be worse the 2nd time). I have some Exofficio shirts that are collared, have pockets and are hot as hell. These Zorrel shirts(and regular applications of DEET on exposed skin), while not as dressy, are comfortable to wear and seem to have gotten the job done through 2 dengue seasons.