Insect Shield apparel protects against a variety of insects that can carry dangerous diseases. Insect Shield uses a man-made version of a natural repellant found in certain types of chrysanthemum flowers. This EPA-registered technology is long-lasting, effective, and convenient for repelling mosquitoes, ticks, flies, chiggers, and midges (no-see-ums). Lasts through 70 launderings. For more details on Insect Shield technology, click on the Files tab on the left.