The hand warmer heats up by contact with the air and keeps heat for up to 10 hours.
Simply open the package, shake the warmers to activate them and place them in your gloves or pockets.
OEM, ODM, OBM
Iron, water, vermiculite, charcoal, polymer & salt
3.54" x 2.17" (9cm x 5.5cm）
158 °F (70 °C)
135 °F (57 °C)
·Ready to use
·Safe, natural heat
·Heats up about 15 minutes after opening
·Safe to dispose of with regular garbage; ingredients will not harm the environment.