One essential thing that is needed during the winter months is the reusable hand warmer. This object assists in keeping the hands warm while performing various outdoor activities like hiking, skiing, mountain climbing, and fishing.

These are primarily metal objects or small packets that produce heat when required, for cold hands. Other kinds of warmers are also available that help to soothe joint aches or muscular pains.

Reusable hand warmers can be used in various portions of the body and not just hands. Adhesive strips are present to keep them glued to clothing items like underwear and gloves. The strips should not be placed directly on the skin as burning and itching might occur.

Certain warmers can also be stuck in the socks or inserted into boots/shoes. Though the prime objective of these products is to keep the hands warm, their use is more diverse as other body parts can also reap the benefits.

Certain ingredients are present in the hand warmers like iron, cellulose, activated carbon, water, salt and vermiculite. Exothermic oxidation of Fe (Iron) generates the required heat when these substances come in contact with air.

Salt and water act as the catalysts and activated carbon hastens the rate of reaction. There is another kind of reusable warmer existent that runs on the lighter fuels. In these warmers, the heat is produced due to reaction between the fuel and the platinum catalyst.

Another technique for generating heat is crystallization of solution in supersaturated form. Bending / snapping of a tiny metal disc results in the formation of heat inside the pad in this scenario. Due to this activity, nucleation occurs that starts the process of crystallization. For dissolving the salt in the water-of-crystallization, heat is needed.

A person does not need to shop extensively for purchasing a reusable hand warmer. Custom fitting or comparison shopping is not that crucial with these objects. There are reputed stores that deal with outdoor gear & survival goods and a person can get purchase these devices easily from these local retailers.

Major departmental stores, sporting goods departments or online website can also as places for buying these warmers. There is not much variation present in the price of these hand warmers and the normal range is $4 to $8 (per unit) approximately. This makes the product more cost effective compared to the expensive hand warming devices that are powered by the lighter fluids.