1 Luminous design: The valve stem cover is made of luminescent material, which can make the car decorated with the tire valve stem cover glow at night, giving your car/motorcycle/bike a unique and luxurious appearance, which is beautiful and dazzling. 2 Double protection: The one-piece tire valve stem cover can effectively protect the valve, which can prevent the valve stem from corroding, prevent sand, dust, or water from entering the tire, preventing the valve from leaking, and ensure safe driving. 3 Universal tire stem cover: Wheel covers help keep the tires of cars, bicycles, trucks, and other motor vehicles at the proper inflation level and improve visibility at night and in bad weather to ensure safety and give you more fun to drive. 4 Easy to install: The tire cover requires no tools, just remove the existing tire valve cover and tighten it easily by hand. Auto light up, when first installed, please shine light or sunlight on the tire valve for 10-15 seconds to produce a brighter effect at night. 5 Stylish appearance: You will receive 16 pieces of car tire covers, enough for your daily application and replacement needs. The perfect gift for friends, bosses, family, and more. Shock them with something eye-catching and stylish.