Jason Products Bird Study Coasters are environmentally-friendly coasters are made from high-density wood fiberboard from New Zealand and cork from Portugal, both renewable, non-rain forest resources. Jason Products offer high-quality art with a protective coating to create functional and aesthetic tableware. A UV-cured acrylic coating is specially formulated to protect the artwork while maintaining picture clarity. Coasters are sealed around the edges with a protective, durable, finishing shine to complete the process. Heat resistant to 110 C / 225 F. Unsuitable for use with cookware taken directly from the oven or stovetop. Set of 6.