When sweating, the water is stored in the honeycomb and produces a sultry feeling, which is not only not easy to dry, but also easily hides dirt and becomes a bed for bacteria to grow. Sponge bras cannot be cleaned thoroughly. Sponge underwear is very absorbent and is made of petroleum waste. When you wash it, the sponge is already quietly absorbing those cleaning products such as laundry and soap. No matter how you wash it, it will not be completely of washing.
And the breathing of our chest mainly relies on the nipple. Think about what will happen if our nipple is surrounded by clean elements and dirty things for a long time, and the consequences are very serious.