Product of choice for World's Toughest Mudder and Adventure Racing as it has true endurance and performace, developed by Steve Gurney 9 x winner of Coast to Coast New Zealand;Very long lasting, this will not wash off at the first sign of perspiration, water, or mud!;Increases skin water resistance and helps prevent trench foot, protects against chafe and blisters and lasts a long time.;Proven performance from the Amazon to deserts as an athlete's or hiker's best friend!;Pleasant smelling Tea Tree oil adds anti bacterial and fungal qualities.