The FLSK bottle holder is made of neoprene fabric and therefore keeps all drinks, whether cold or warm, at the desired temperature. 
The FLSK bottle cage is a great companion, especially for layovers: hiking in the Rocky Mountains, a bike ride across the Golden Gate Bridge or a day at the beach in San Diego. The mount clips onto a backpack or a bag and gives you easy acess.
Tip: The fit is particularly suitable for the FLSK bottles that were given out by a large German airline as an employee gift.