Keeps my sh!t cold, looks good and keeps the dew on the inside!!!
Pretty nifty way to keep your beverage colder. I use these exclusively on stainless Nalgenes cuz heat/cold conduction is much faster than on the plastic models. Cannot imagine why anyone would get a black one, however.
I like Nalgene bottles for their lighter weight on longer hikes, but I still want cold water. This koozie keeps your water cold, and the sweat from the Nalgene bottle off your backpack!