Melts snow on contact and continues to melt snow at a rate of 2 inches per hour, leaving the pathway to your home clean and clear. Made of customized thermoplastic material, the mats are portable and are designed to be left outside all winter long. They can be used independently or interconnected with one another to create a continuous system of snow melting mats. TUV certified. Import. Shipped directly from manufacturer; please allow extra time.