12oz Magic Hand Warmer/Muscle Cooler Bottle

Multi-function
Hand Warmer + Muscle Cooler + Portable Bottle 
Designed to quickly transfer the internal liquid temperature to 
the outer surface of the bottle.
A quick warm up or cool down will never be too far away.
Patented Tech
A heated or chilled bottle in seconds
With a shake of the bottle instantly feel the surface temperature transform.