Ready to Use: our chair leg covers are designed in the shape of a tennis ball, soft and elastic, and there is a cross opening on each ball, pre cut opening can be easily installed to the corner of the table without other tools The Proper Size Provides Different Choices: the size of our precut tennis balls for chairs is about 6.4 cm/ 2.52 inches in diameter, which is suitable for most table corners, chair corners and stool corners, ideal for round, square, irregular or other strange shape furniture legs Dependable Material: these dark blue tennis balls for chair legs are made of chemical fiber material, reliable and non slip, convenient for you to move your desks or chairs without hurting your floor, suitable for all kinds of flooring, including tile, hardwood, laminate wood floor, vinyl base board and other smooth floor