Rabbit Wine Trek Portable Bottle Cooler (Silver and Blue) This lightweight insulated case keeps a standard-size wine bottle cool when outside temperatures are over 70 degrees. The insulating inner sleeve is ready to use after just 30 minutes in the freezer. Keeps wine and champagne cool for hours while outdoors. Perfect for picnics, nature hikes, barbecues and more. A convenient carrying loop keeps the wine cooler attached to a backpack or other harness.