1. A PU film lamination process makes this bed pad waterproof. PU is a layer of film that is laminated onto the back of the Underpad. Other Washable Underpads normally use polyvinyl chloride (PVC) on the backs of their products which makes them environmentally unfriendly.
2. The PU film comes from blown extrusion process which use less energy to produce then compared to PVC.  The PU lamination process uses less energy to manufacturer, creates less pollution, and is easier to dispose of at waste treatment plants than standard PVC.
3. PU is softer and weighs less then the tradition PVC which means it costs less to ship.
4. Laundry costs are usually calculated by weight and volume. PU backed Underpads are lighter and more products can be washed and dried at any given time. 
5. Basically, this is the new modern technology Underpad!!

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