Wind covers may have been the first HMD (heat management device) before that was even a thing. These inexpensive accessories perform multiple functions for both the hookah smoker, as well as the hookah bar owner. The benefits include; longer lasting coals (decreased cost for lounge owners), cleaner sessions with less ass blowing around, and more even heat distribution so the bowl smokes more evenly and fully. They also keep your customers from figeting with their own coals, preventing burns and fire hazards. If you don't use wind covers in your lounge, we highly recommend you buy some today.