Polar Ice Balls Silicone Trays - Maker of 8 X-large Ice Spheres to Keep Drinks Colder Longer Made from BPA Free FDA Approved Food Grade Silicone Each Box contains 2 stackable Ice Ball Trays to make 8 Ice Balls X-Large 1.78 inches (4.5cm) Ice Balls melt slower and keep your drinks cooler longer The Ice Ball Trays are dishwasher safe and have a Lifetime Guarantee Click Buy Now and enjoy your purchase quickly with Amazon Fulfillment