Insect Shield Technology

forest with bugs

What the Heck is Insect Shield?

Insect Shield isn't a sticky spray, goofy bracelet or electromagnetic force field, although there is a ton of science behind this revolution in outdoor apparel. Long story short, shirts with Insect Shield helps keep bugs from biting you. The scientists at Insect Shield have developed a proprietary formula of permethrin that is bound directly into the fabric of the shirts you already know and love. The result is an effective, odorless insect protection that lasts as long as the shirt will. Permethrin is EPA registered and has an excellent safety record. 

Which Insects Does Insect Shield Repel?

The EPA requires extensive effectiveness data to prove a product's ability to repel insects. Insect Shield has been tested on a variety of the following species: 









Prove It!

Over 20 years of intense research and field study have gone into the products that are available today. Insect Shield’s testing methods follow USDA guidelines, and the results show that the unique, long-lasting insect protection works. Don't believe us? Check out the mosquito test video.

How Long Will it Last?

The repellency of Insect Shield apparel will last through 70 washings—the expected lifetime of a shirt. We do not recommend limiting the number of times you wash your Polarmax shirt to extend the lifetime of the repellent. :)