| 摘要 |
<p>The shoe insole (1) is made-up of two sheets of PVC material welded with one another along its periphery (1A) and along some internal lines (2), preferably in longitudinal direction, with the aim of forming intercommunicating channels and chambers holding a chemical solution. One of these chambers holds a metallic plate (4), that, after a manual handling, such as friction, made by the user, primes a chemical reaction in the solution that occurs with heat development. The insole is suitable for any type of shoes, particularly for sport shoes (ski-boots and après-ski outfits, fishing boots, hunting boots and riding boots) and, after the priming of the chemical reaction in the solution, allows to heat the foot of the user. <IMAGE></p> |
