Life Upgrade Cool Cover - Stainless Steel Bottle Cover with Insulating Sleeve - Beer Bottle Insulator with Opener Durable - High quality stainless steel and top quality neoprene to protect your bottle Insulating - Neoprene lined and comes with a FREE neoprene sleeve for additional insulation Versatile - Fits most 12 ounce glass bottles - see list below Protective - Prevents your bottle from being broken and prevents your bottle from spilling Easy to use - Just unscrew the bottom, slip your bottle in, and screw the bottom back on!