Set of 6 transparent nipples for baby bottles, designed to be gentle on babies. - Quantity: 6 - Color: Transparent - Type: Pigeon Slim Nipple M (4 months~) Thank you for looking. I used these for 3 months. The retail price for a pack of 2 is 1400 yen, so this is equivalent to 4200 yen. Considering that hospitals also sterilize and reuse them, you don't need to be overly concerned, so please feel free to buy them at a low price! How about trying them out? They are relatively clean with no cracks. I will sterilize them before sending them, but please sterilize them again before use. When shipping, I will fold them as shown in the image.