The Vacu Vin Wine Cooler Sleeve black actively chills your wine within 15 minutes and maintains the ideal temperature for hours using innovative cooling gel. Its lightweight and reusable design make it perfect for outdoor events, picnics, or casual gatherings, allowing you to enjoy a refreshing glass of wine anytime.Before use, keep the cooling sleeve in the freezer for 6 hours for best results. When ready, slip it around your wine bottle, and let it cool for 15 minutes. The sleeve fits tightly around 0.7-1L bottles and drink bottles. Portable: Lightweight and reusable, prefect for travel Effective Cooling: Actively lowers the temperature of your wine with innovative cooling technology Built to last: Made in Europe Experience the convenience and efficiency of the Vacu Vin Wine Cooler Sleeve—no ice required.