Most car sunroofs and rear windows are made of tempered glass. To discern the type of glass in your vehicle's side window, examine the bottom corner for any indication. You might find a label stating 'tempered' or 'laminated.' In the absence of a label, lower the window and observe it from a top-down perspective. A seamless, single-layer appearance indicates tempered glass, whereas a multi-layered appearance with a noticeable ridge suggests laminated glass. Window breakers are typically effective on tempered glass. To further assist you in recognizing tempered glass, consult this informative video. https://youtu.be/PQR4936l2d8