GLOW IN THE DARK: These tire valve caps are made of luminous material, please illuminate the tire valve with light or sunlight for 10-15 seconds before it glows, give your car a unique luxury look with beautiful luster.Material: Tire Covers The illuminated valve stem caps are made of high quality ABS material.  Transparent cover protection to prevent valve stem corrosion with long service life.Easy to install: You just need to install it directly on the valve by hand, which is very convenient.SAFE: Tire valve caps can protect the valve and prevent water, dust or sand from entering the tire; Ensuring safe driving.Application: You don't need to worry about compatibility because our tire valve caps are suitable for 99% of cars on the market, suitable for cars, bicycles, SUVs, trucks, bicycles, motor vehicles, etc.Luminous Valve Caps The inner material of the tire valve stem cap can absorb and store light when illuminated by light, then glow in the dark and at night. It will turn with the wheel and form a nice circle of lightVersatile Tire Valve Caps>> Made of premium and stable plastic that protects automobile wheel valves from corrosion and prevents tire leakage. It's easy to find and keep a safe distance when cycling at night. Fashionable and stylish accessory for driving and cycling.