This ultra-comfortable tee keeps biting insects at bay with EPA-approved Insect Shield®, proven effective against ticks and mosquitoes for up to 70 washes. Made from a softer, more flexible cotton/poly/spandex blend, it offers better mobility and built-in UPF 50+ SunSmart® protection—about ten times more than a standard cotton tee. Slightly Fitted for ease through the chest and sleeves with a trimmer waist, it repels bugs without odor or greasy sprays thanks to permethrin, a synthetic version of a natural repellent found in chrysanthemums. Give it a try - Machine wash and dry.