Made of recycled neoprene from scuba suits. Sip on that.
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!