addition to black,the Luggage Wheel Cover is specially designed with fluorescent color,which is primary color in daytime & strong light,and fluoresces in low light or at night, making it highly recognizable.Additionally,widening the outside coverage of the protector to 0.6cm,the Such design can make the Suitcase Wheel Covers wrap the wheels tighter,no easy to slip off. [Protect Suitcase Wheels]This Tire Cover protects the luggage compa rtment wheels from scratches, wear,and damage from sharp objects.Using a wheel protector can extend the service life of the luggage compartment,saving both money & effort. [Noise Reduction]This Luggage Wheel Protector Covers are made of soft silicone material with a unique rhombus design which make It soft & stretchable,can significantly reduce the noise generated when the luggage is dragged.No noise,more quiet,make your travel more pleasant. [[Easy To Use]The distance between the wheels and the axles and fenders should meet the size requirements described in our main pictures,very easy to install,and it can be disassembled,washed & reused. Color:Fluorescent blue/Black Material: Silicone Package Contents: 8 x Luggage wheel cover Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.