romatlink Breast Shell, 30 oz, Stainless Steel Meant to be worn inside your bra, these breast shells can not only protect sore nipples but also catch all the milk leaks. It protects sore or cracked nipples by keeping clothes off them and avoid nipples from fiction. Breast Shells are made of food-grade material(BPA-free) They are reusable and washable. Compared with breast pads, it's easier to clean and sterilize. After wearing, just wash them with clean water and then sterilize with bottles so that you can use again without waiting too long They're portable, only 95mm in diameter. You can bring them outside and use them whenever and wherever you like.