Super Absorbent and Quick Drying: The 6-layer protection design makes these thickened large dog training pads much more absorbent than most dog pads on the market. The top layer uses a new premium material perforated film, which speeds up liquid passage compared to common non-woven fabric, keeping the surface quick-drying, comfortable, free of puddling, and no tracking. Leak-proof Protection to Keep Your Home Clean: Each large dog potty pad features an upgraded thickened plastic backing (Pe film) as the last layer, which is more leak-proof, tear-resistant, and durable than most pet training pads. It protects floors, carpets, sofas, chairs, mattresses, beds, etc., from urine damage by blocking leaks and holds up to 7 cups of liquid.