When the mosquitoes, no-see-ums, and other insects are attacking, Bens fine-weave UltraNet will keep even the tiniest of pests out! Bens UltraNet provides the highest visibility of any competing no-see-um net on the market. And Bens ingenious UltraNet design seals out the bugs around your chest while allowing you to keep your shirt zipped down and open for maximum ventilation.