| 摘要 |
<p>In a flexible heated sole for articles of footwear containing heat-accumulating material of which the state changes at a melting point of >40°C, the material (15) is held internally of the sole (35) together with a heat source which, when activated, brings about the change from solid to liquid state; in the liquid state, the material possesses the capacity to absorb a notable quantity of thermal energy, which is gradually restored as heat to the foot of the wearer over a generous period of time.</p> |
