Thank you for viewing. I am selling dress-up rubber for the G300s and G300sr mice. This is a rubber sheet that you apply to the contact surface between the mouse and your fingers, repairing the deterioration of the mouse's original rubber and improving its appearance. The set also includes an alcohol wipe. After removing any oil and grease, apply the specially cut rubber sheet. Please see the photos for details. If the side rubber is showing indentations, it is recommended to fill the resin with epoxy bond or similar before applying this product. For those who love and cherish their G300s and G300sr, the side rubber can deteriorate and the clicking areas can become shiny after years of use. Why not refresh them? #LOGICOOL #Logitech #Logicool #Replacement Repair Maintenance #Multi-function Mouse 9 buttons #Discontinued Other... Gaming Mouse