Protect your pup from the biting, gnawing annoyance of insects with this innovative bug-repelling t-shirt for dogs! Insect Shield Technology! Pull-over style Cotton/poly blend Why We Love It: The Insect Shield Dog T-Shirt by Doggles is an innovative dog shirt using state-of-the-art insect repelling technology. This t-shirt for dogs uses permethrin, an insect repellent that is effective and odorless. The permethrin is long-lasting, even surviving up to 70 washes! This dog t-shirt repels mosquitoes, ticks, ants, flies, chiggers, and midges.