This choker is actually a kind of pudding half full of Lin seeds in order to adapt it to his neck easily. Removable to wash the red protection (practice). Reheat in the microwave practice. The heat is felt for 15 to 20 minutes. But that's normal when you do not want the power !! With regard to moisture, it sestompe after some reheating. Strong smell pleasant or unpleasant depending people. The size is rather small necks: about 44 cm long I recommend because it's green, long life and it relieves pain
