海绵橡胶鞋跟垫。

Sponge rubber heel cushion.

首先，以硅橡胶为主要原料合成生产了海绵橡胶球；

First, rubber sponge balls are mainly synthesized with silicone rubber.

经过海绵橡胶球清洗后效果明显增强。

Also , the washing effect of rubber sponge balls is better.