Bigger is usually better right... well at least in the case of keeping your guys favorite beverage chilled this is true. One (or two) large ice balls will melt slower than cubes in his favorite spirit. Allowing for maximum beverage enjoyment.
To use this durable silicone tray; place lid onto tray, fill each ball with water until full, sit flat in freezer for at least 4 hours, then remove silicone form by pulling up corner flap.
Easy to fill, easy to use, easy to clean!