Union Jack coasters Union Jack coasters Union Jack coasters Union Jack coasters Fly the flag for the UK as you drink your tea! £20.00 Sorry, sold. Please contact me if you would like me to make one for you. These coasters are formed by fusing an opaque, coloured or decorative layer with a second transparent or coloured layer.These two are to celebrate the United Kingdom. I think the Union Jack is one of the most recognisable flags of the world......but as I was making them I was wishing it were a more simple design! They each measure 10cm x 10cm (3.93 inches). Each one has 4 bumper feet to prevent the coaster sliding when used.UK free post and (careful!) packing.