Review on Nalgene Bottle Carrier Insulated: Keep Your 32 Oz Bottles Cold in Gray by Doug Booth

This bottle stopper covers and insulates the entire bottle. It fits in a 32 ounce Nalgene bottle with a narrow neck. The top cover fastens with a zipper. This means your bottle is completely sealed. In other words, insulation is better. The exterior is made of durable synthetic nylon. The inside is lined with foil. Your drink will stay hot or cold for hours. This bottle stopper is attractive and good quality. Consider your needs. If you need maximum insulation, this is your choice. For short-term insulation, a simple neoprene sleeve is more convenient. Highly recommended.