This is a hygienic case that easily sterilizes baby bottles with just water. I used it for 6 months, but the frequency of use was low as I only used it once a day for milk. It is relatively clean, but please understand that it is a used item before purchasing. - Brand: Combi - Product Name: Jokin Jo-zu (Sterilizing Jo-zu) - Function: Sterilizes with just water - Accessories: Comes with a small items case