This square glass coaster engraved with a "Four-Tea" Striped Teacup Design is perfect for those celebrating their 40th birthday. The coaster is durable and stable enough to place hot or cold drinks on it. The bottom of the coaster comes with 4 small grips, located in each corner of the coaster to prevent the coaster from sliding or scratching the surface it is placed on. • Wipe Clean only • Not dishwasher safe • Suitable for home use • Dimensions: 10 x 10 x 0.5cm (3.9" x 3.9" x 0.2")