Easily identify which of your tires are filled with nitrogen using our bright green tire valve caps. Say goodbye to worn and leaky valve caps! Since 1989 Slime has been committed to providing our customers with high quality innovative tire care products. As the worldwide leader in tire care we offer a complete line that allows us to present retailers and distributors with a category solution while giving customers the tools they need to care for their tires save money stay safe and have fun.