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Keep people guessing with the GoPong Ankle Monitor Flask! GoPong's Ankle Monitor Flask looks like a real device so you can fill it with your favorite drink and take it to virtually any indoor or outdoor event. Our original design even includes fake LED lights and a metallic barcode sticker for the ultimate disguise. We do not condone any illegal uses, but like you, we hate overpaying for drinks! The flask holds 5 oz and can easily be filled using the included funnel and liquor bottle pour spout to take on the go. Once you are ready to drink, simply slide the flask off the ankle strap, unscrew the cap, and mix with your favorite beverage. It's the perfect gift for bachelor parties, costume contests, fantasy football punishments, and more!