On the market to choose from insole: 1) EVA foam rubber insole It is derived from sports shoes insoles, but with EVA foam rubber feet at the bottom of the arc cast, in addition to the price of the most expensive properties outside of what is essentially free at all, most of the original hiking boots are the use of such insoles. Already discovered 2) cork insoles early Europeans hundreds of years ago was one of the production of cork insoles good material. Cork advantage is light, soft and comfortable, and there is natural ventilation, but the biggest advantage is that you will be in accordance with the curvature of the foot is automatically adjusted to the most suitable shape to ensure tight. Tradition is a natural cork insole tipping knife whittled the arc feet, but modern production methods have been transferred die casting purposes. But also because the water is too soft pine, in addition to the comfort and does not provide supporting or other aspects of the function; in addition, cork insoles also not cheap. Buy insoles tips: 1, generally foam insole material EVA, latex, silicone and PU material; 2, from a cost point of view of materials: EVA foam is the lowest, followed by latex and silicone, the most expensive is PU; 3, from a functional point of view the effect: A: EVA foam and latex have flexibility but no flexibility, may be deformed, most of the market now is of such a material, (hey heating insole plug, now NIKE, ADIDAS other brands of insoles (genuine) many are foaming EVA, unlike the previous is PU, getting cut corners !!) just started wearing a soft feel can, after a few days it will become no softness and flexibility of electronic heating insole, insole becomes a flat (deformation); B: silicone case softness almost, a little hard, but elastic good, it will not be deformed; C: PU insole material is the best, softness automatic heating insoles good elasticity, the key is not deformed, a long time, like soft and flexible! 4. Based on the above, when you buy insole PU insole is best to choose the material, the overall performance is the best! ! 5, EVA foam insole for heating insole, no matter what brand, no matter how much thickness, as long as the material is EVA, the effect is the worst, one will deform, the price is the lowest, it is recommended that buyers EVA insole to buy when we must think oh! ! Charging heating insoles, heated insoles Zhuhai, Dongguan City, enjoy the warmth of the electron by the warmth of Electronic Science and Technology Co., Ltd. to provide shared. Dongguan City to enjoy the warmth of Electronic Science and Technology Co., Ltd. (www.warming-day.com) strong, credible, in Dongguan, Guangdong garment processing equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead to enjoy the warmth of electronic and you work into the brilliant, for a better future!