NoTrax Easy Rider Reflective Modular Speed Bumps 100% recycled tires. Reduces speed to approximately 2 mph to 5 mph. Molded highway reflective tape makes curb highly visible at night and cat's eye reflectors provide additional reflectivity at night. Modular design to cover the width of any roadway and flexes slightly to confirm to the contour of uneven surfaces and gravel. to damage from ultraviolet light and precipitation including ice, road salt, gas and oil, and does not change with extreme weather swings Pack of 1