Aluminum and glass, a deadly combo. The Double Up™ Aluminum/Glass Pot Call is made from injection-molded polymer that's durable, ready to stand up to the toughest hunts. The aluminum top offers sharp, high-pitched volume for far off calling, while the glass bottom allows you to get clear and soft when the gobblers get in close. No need to worry about concealment with the Double Up’s Mossy Oak® Greenleaf® finish. Condition your striking surfaces as needed using the included scouring pad to get your preferred sounds. Check out our recommended pot call techniques below.