Why do you slide faster down a slide when you sit on a plastic fiberglass mat?

You slide faster down a slide when using a plastic fiberglass mat due to reduced friction between the mat and the slide's surface. The smooth, low-friction material of the mat allows for easier gliding compared to direct contact with the slide, which can create more drag. Additionally, the mat may help distribute your weight more evenly, further enhancing your speed. Overall, the combination of reduced friction and improved weight distribution results in a faster descent.