It's the only wristband scientifically tested and proven to repel mosquitoes and other flying, biting insects. Safe, quick and easy-just slip it on your wrist and go! Band is nontoxic, waterproof, sweatproof, and tested to repel for up to 100 hours. Uses a 100% natural, food-grade formula that is nonirritating and safe to use on children of all ages. Resealable storage bag preserves effectiveness. One size fits most.