Nordic Ware Stuffed Burger Maker and Patty Press, BPA-free and Melamine Free Plastic, 5 Year Warranty, 4″ X 4″ X 0.75″Introducing 365 indoor/outdoor products designed to inspire culinary creativity indoors and out, 365 days a year. Discover the versatility in our line that brings outdoor flavors to indoor cooking, and indoor convenience to outdoor grilling. Crafted with the all-american chef in mind, 365 is the only full line of indoor/outdoor grill cookware. The only device you need in your arsenal to build made-to-order stuffed burgers, round patties or square sliders. Compared to others on the market, this version is simple in design and use. It?s made of durable plastic so there are no moving parts to break.