... 7cmx9cm Components: Iron powder, water, salt, activated charcoal. Uses: Hand Warmer heating pads are standard equipment for skiers, snowboarders, hunters ... packing,paper box packing or customized packing. Hand warmer packs Hander Warmer heating pad:provide warmly heat for 8 -12hours for ... your palm. Portable heat in the palm of your hand! Air-activated Hand ...