Heat and Reveal Hard Top Coasters with a heat sensitive area that becomes transparent when a hot promotional mug is placed upon it – revealing the printed image beneath. This is a PVC material and due to its nature some distortion can occur with very high heat – for example from plastic vending-machine cups. High temperture material options are available including polycarbonate coasters. Why not ask our Design Studio to send you a Virtual Visual? All we need is your artwork and we can send you back a free of charge proof showing how your logo and marketing imprint could look on this exciting promotional item. If you do not have any artwork, our design team will be more than happy to create this for you.