Dream Big Coaster £4.50 Default Title - £4.50 Quantity This product is currently sold out. Please fill in the form below if you'd like to be notified when it becomes available. By Katie Abey Coaster dimensions: 100 x 100mm. Coasters are cork backed and have a tough melamine top which makes them pretty good at resisting heat, water and any potential scratches. Made in the UK.