It's all about the presentation. A few ice cubes in the glass accomplishes pretty much the same goal of making liquor cold as the Ice Jacket Bottle Chiller, but the latter just looks so freaking cool ensconcing boozy vessels in shrouds of molded ice. To use, sit your favorite 700 - 750mL bottle of gin, vodka, tequila, or whiskey on the Chiller's base-grip, slide on and clip the polypropylene sleeve to seal, and then make a liquid jacket by filling with water. A 7- to 8-hour stint in the freezer returns a perfectly frosted party in a bottle that will keep contents cold for several hours. And as the ice melts or drunk people lick it, the Chiller's base will serve as a coaster and catch the drips.
Common spirits the Ice Jacket Bottle Chiller accommodates include Plymouth London Dry Gin, Captain Morgan rums, Stolichnaya vodkas, and Black Velvet whiskey. Black Velvet. I used to work in a restaurant with a past-her-prime lady whose drink of choice was Black Velvet. One night she and her husband went out and got so drunk that she came home, slipped and fell on her kitchen floor, and didn't even realize she had broken her leg almost in half. The next morning she woke up to find it had swelled so much it burst through her sweatpants all Incredible Hulk style and she had to have it amputated. Yeah, I stay away from the Black Velvet.