Marcus & Marcus Silicone Breastmilk Collector is made of 100% food grade high quality silicone. PVC. BPA. and phthalate free. The material is extremely soft for mothers to wear at work or to collect their natural letdown. This is a great alternative to nursing pads as precious breast milk can be lost. Our silicone breast milk collector fits well in the bra and gives mothers a worry free solution about getting the shirt wet.