Vacuum insulated
![Hydro Flask Launches 21oz Vacuum Insulated Titanium Bottle](http://images.ctfassets.net/r7p9m4b1iqbp/3NDf6DUp9bYpSU2tpn7zZy/98b07b8fa64868b1068c95a4bd5be3ba/HydroFlask-Titanium-Review-Field-Mag-thumb.jpg?w=600&q=85&fm=jpg&fl=progressive)
Hydro Flask Introduces Its First Ever Titanium Bottle, Weighing Just 8oz
A surprising innovation from the leader in insulated drinking vessels makes this 21-ouncer the lightest on the market
A surprising innovation from the leader in insulated drinking vessels makes this 21-ouncer the lightest on the market