handwarmer key chains

Outside is the soft glue of PVC, inside is acetic acid sodium 

Material: It contains sodium acetate and the magic heating disk 






Feature: without using battery ,it can get warm automatically when actived.
TO active: when actived, flexing metal disk can make it to became warm up to approximately 50 degrees.
Convenient and reusable 
To recharge :place in boiling water for approximately 6 minutes when the pad cool
down and become hard
Each of our item is cheap and welcome to come here!