Flexible and toughness, elastic, not only can work well in the cold environment, keep the good soft .
but also it can bear the high temperature en the summer, ensure it not weak .
Better endure the pressure, not comes draw back when meet the some suddenly start the engine.
Smooth of inwall, no stickiness of powder, make the powder keep unblocked, easy for clean and maintain.
Have anti-static electricity, keep equilibrium of the power no produce Frictional static .