The underside of our indoor entrance mat is made of durable, tear-resistant rubber, designed to withstand all weather conditions year-round while providing excellent non-slip properties to keep it firmly in place. (Note: To maintain its non-slip effectiveness, ensure the floor beneath the mat is dry.) Featuring a low-profile design, it allows doors to open smoothly without obstruction. Versatile and stylish, this mat is perfect for front doors, porches, laundry rooms, decks, kitchens, and more, adding both functionality and a welcoming touch to any space.