What is inside Push Up bra 内衣

Have you wonder what is inside Push Up bra. It was a pack of oil.

这是Triumph的push up内衣。昨天在洗的时后。水面浮出油。就剪开來看。哗。不得了，里面原来是包了一片油包。原来push是这样行成的
资料来源：Therese Ng