Most people have the problem of cold hands and feet. And various hand warmers are placed in convenience stores in winter so that you can’t help but buy one as soon as you walk into the store when your hands and feet are numb from the cold. You can buy reusable or rechargeable hand warmers and put them with your hands in your pockets to keep warm. But for the feet, apart from wearing thick socks and shoes, do your feet still feel cold? So expect for the hand warmers for your hands, there are also "foot warmers", which can be attached to insoles or socks. However， there are so many hand and foot warmers on the market, how to choose a better one in the winter? Here are a few tips for your reference.
The temperature of the hand and foot warmers
The most important point of purchase is the "heating temperature" of the hand and foot warmers. For the type of disposable hand and foot warmers， they can be attached to the waist, abdomen, calves, thighs, knees, etc. of the body to fix the heat in specific parts, but please pay attention to sticking them on clothes, not directly on the human body, as it will burn you.
If you use the disposable hand and foot warmers to make your hands warm, you need to pinch the sticky disposable hand and foot warmers to conduct warmth to the hand, or put In the pocket, put your hands in the pocket to keep warm, which is less convenient to use. So this type of disposable hand and foot warmers are more suitable for warming your feet and attaching to insoles or socks. But for another type of rechargeable hand warmers， you can choose "at least 2 levels of heat control".And sometimes the weather changes， the rechargeable hand warmers could adjust the temperature according to the usage situation, and they can also warm hands in the coldest weather.
Using Time of the hand and foot warmers
The key to choosing again is the use time of the hand and foot warmers. The traditional type of disposable hand and foot warmers use the principle of activated carbon to absorb water vapor, oxidize the iron to generate heat, and emit temperature to keep warm, which are normally provided for people who spend time outdoors.
But for some rechargeable hand and foot warmers, its use time depends on the battery capacity of the hand warmer. Take Ocoopa Union 2s rechargeable hand warmers for instance, they have a battery life of over 8 hours. so you can still accompany yourself through the cold weather when you are at work or outdoor activities. And the Ocoopa Union 2s rechargeable hand warmers offer 4 levels of heating temperatures from cozy warmth to 145℉ hot. You can choose your most comfortable heat.
Other functions of hand and foot warmers
Other additional functions can be selected for hand and foot warmers depending on whether there is a demand. For example， the Ocoopa Union 2s rechargeable hand warmers can also be "used as a mobile power supply", these hand warmers can be also used as a power bank (with a capacity of 5000mAh each). In addition to the function of warming your hands when going out, they can also charge mobile phones. Also, the Ocoopa Union 2s rechargeable hand warmers can be used to help those suffering from problems such as Raynaud's syndrome or simply too-cold hands. The use time of Ocoopa Union 2s hand warmers varies according to based on the selected temperature, which can produce a massive heat output run time of 8+ hours on low. And for those who want to warm both hands at the same time, the possibility of the two hand warmers being able to be used separately or joined by magnets is very convenient.
Conclusion
The traditional type of disposable hand and foot warmers uses the principle of activated carbon that can only be "used once". Although they are convenient to use, they would create lots of waste. Considering the sustainability of the hand and foot warmers， it is recommended to buy a product such as the Ocoopa Union 2s rechargeable hand warmers. In addition to being rechargeable, it can also reduce the generation of garbage and save money. It is relatively cost-effective to reuse every year, and it is also more environmentally friendly. So most people would choose rechargeable hand warmers now. And there are many rechargeable hand warmers on the market, some use "battery", some use "USB charging", and some use "both battery + USB". Therefore, when purchasing, you can purchase according to your needs.