The cooling gel bottle sleeve will help cool or keep your drink at the desired temperature where ice or a refrigerator is not available. Great for a picnic. You can use it for a bottle of wine, sparkling wine, but also soft drinks. Before using it, put it in the freezer for about 5 hours. The gel in the package needs to be spread evenly over the entire surface of the sleeve before freezing. After freezing, attach the cooled bottle sleeve. This will cool the drink or keep it cold longer. Reusable, unbreakable. You can also use it in thermo bags, where it will keep food refreshing longer or as a cooling wrap to cool parts of the body in case of injuries or after insect bites. Material: surface: polyester (satin fabric), inside: non-woven fabric, PVC, cooling gel liquid. Dimensions: 16x23 cm.