Thermopad Handwarmer for 12 Hours of Heat- Twin Pack Active Charcoal hand warmer for use on cold days. Once opened from its outer wrapper the hand warmer is activated by its exposure to air to give you a heat duration of up to 12 hours. Made from natural ingredients. These compact charcoal hand warmers come in Twin Packs. Designed for hikers, mountain bikers, skiers, hunters, fishermen, golfers, or people who work or play in the cold for long hours. These heat pads are air-activated and will provide up to 12 hours of soothing warmth inside gloves, jacket pockets, trouser pockets or you can just hold them in your hands! Features: Packaged in pairs Small size; 8 x 5 cm  /  3 x 2 in - Fits in every glove or pocket Weight: 48 g  /  1.7 oz Individually sealed in airtight package Portable (No wires or batteries) Odorless Disposable via household or general waste Safe: Not flammable Nonhazardous / nontoxic Made from Natural and harmless ingredients Warm for up to 12 hours Average temperature: 55° C  /  131° F Maximum temperature: 65°C  /  149° F Easy to Use, Ready to Use - Can be used immediately after opening Single use product - nce activated by air, they cannot be re-heated for any purpose. Can only be used one time. Storage life: several years Ideal for every kind of winter sports, outdoor sports or visits For an ideal heat development, the warmers should be used in an insulated environment like gloves or jacket pockets or trouser pockets.  Made in Germany How it works: Easy to use: After a few minutes in the air, the warmer is ready to use. Activation starts as soon as the product comes into contact with oxygen. Should there be interruptions in the oxygen supply, the heat generation is interrupted and the product cools. Hours of warmth: Thermopad Hand warmers provide you with soothing and pleasant warmth for up to 12 hours. They are ideal for hiking, stadium and Christmas market visits, winter sports and all other outdoor activities. Natural and harmless ingredients: The granules used by Thermopad for the activated carbon warmer are made exclusively from other natural and harmless ingredients: 4Fe + 3O2 + 6H2O = 4Fe(OH)3 Charcoal: The carbon with its big surface as catalyst and heat accumulator. Iron powder: During the reaction with oxygen the iron oxidates and delivers warmth. Salt and Water: Our warmers contain both ingredients. They work as catalysts and are needed for the chemical reaction. clay mineral (vermiculite): They are needed for the chemical reaction. The ingredients are mixed into a granulate which reacts with oxygen. The soft nonwoven fabric, which is filled with the granulate, regulates the entry of oxygen. Safety instructions Not suitable for medical use. Not suitable for children under 6 years old. Do not use on swollen, broken, inflamed, frozen or sensitive skin. Do not use while sleeping. To avoid burns, remove Thermopads immediately if heat becomes uncomfortable. If during or after use any of the following occur: Skin reactions, burning, bruising, blistering or swelling, discontinue use immediately and seek medical advice. Do not pierce or cut the pads. If the contents become exposed, avoid contact with eyes or mouth. Material: iron powder, salt, active carbon, water and vermiculite