Coasters by Metric USA is the newest addition to the line of home products currently selling on Amazon, bar coasters designed to protect all manner of fine furnishings. Metric USA Drink Coasters are available brown on one side and black on the other, both sides are slightly sticky so a drink glass stays put and so does the coaster, no slipping and sliding on the table. The coasters come in a gift packed ready re-usable box. Metric USA offers a no-quibble, 100% money-back guarantee.