Ex Officio designed its Men's Bugsaway Sandfly Pants for humid, buggy, and hot conditions. The Insect Shield treatment repels bugs mosquitoes, ticks, ants, flies, chiggers, and midges and lasts through 70 washings. The abrasion resistant yet light nylon shell stands up to wear and tear for years of exploration. The Sandfly pants also wick moisture, dry quickly, and provide airflow thanks to mesh panels at the backs of the knees. The gusset promotes a full range of motion, and snap up cuffs help during low running river crossings.