What to do for cold hands?
Instant Hand Warmers
Living in Canada, some of us welcome the winter season while others detest it. Either way we all realize that with winter can come some extremely cold days that we need to be well dressed for. Even with dressing warm and having a good, and sometimes fashionable pair of mitts or gloves, instant hand warmers can provide additional warmth when needed. For outdoor sports I have used the various chemical heat pads that provide hours of heat. However, I was always bothered by the fact that it was chemical based and heard stories of them breaking open causing burns. My family and I stumbled upon reusable heat packs about 6 years ago and have been using them ever since. The heat packs are marketed as Instant, Reusable (100's of times), heat for when you need it. At first I was a little concerned that they only last 20 minutes but the more I thought about it I really only needed a quick warm up and I was happy they were non toxic! Instead of spending $1 for the one time use pack I spent $5 and found 2 reusable packs.
How do they work?
The heat pad has a salt water mixture (sodium acetate - used in salt and vinegar chips) and a stainless steel disk button. Bending the metal disk starts the crystallization process, and you can see the crystallization proceed through the liquid.
How are they reusable?
Once the activation process has started it continues until all the liquid has turned into a crystallized state which eventually cools down and turn into a solid state. To remove or recharge them you simply boil them which melts all the crystals.
For a step by step process you can check out this link: