Size: The diameter of the protective cover is 5.2cm/2in, the thickness is 1.3cm/0.5in, and the side width has increased by 0.3in. Please pay attention to the size and structure of your luggage wheels. Material: This suitcase wheel cover is made of high-quality silicone material, soft and stretchable, adopts a unique wheel design. That can effectively reduce the noise generated when dragging the luggage, absorb shock and prevent scratches, it can effectively protect your luggage wheels. Function: The protective cover can be cleaned and reused, with a patterned design on the surface for anti slip and wear-resistant properties. High quality silicone material is soft and elastic, which can greatly reduce the noise generated when pulling luggage and effectively protect y Applicable: Please refer to the picture. As long as the wheel structure is suitable, this silicone protective cover can be used for luggage, strollers, baby beds, sliding tables, etc. Tip: This luggage wheel cover is suitable for luggage with 4x2 dual wheels and gaps, not suitable for 4x1 single wheel luggage. Please refer to the picture for details, thank you. Tip: This luggage wheel cover is suitable for luggage with 4x2 dual wheels and gaps, not suitable for 4x1 single wheel luggage. Please refer to the picture for details, thank you.