It&';s about time - a DEET-free insect repellent that really works! NatrapelA(R) provides 12 hours of protection from mosquitos, ticks and other biting insects, thanks to it&';s CDC-recommended 20% Picaridin formula. Unlike ineffective DEET alternatives, Picaridin is the only formula that consistently shows equal or better performance than DEET in independent, clinical tests. Even better, NatrapelA(R) is completely safe on gear and will not melt clothing, jackets, fishing line, and other synthetic materials. TSA 3.4oz travel size allows you to bring the maximum amount of Natrapel insect repellent with you wherever you fly.