Why is the nipple clear in material for some Pacifiers and matte in material for others

Madkasse: 15

they should be regularly sterilized by pouring them over with boiling water

Remove the bottle protector when cleaning the bottle

Sistema Madkasse - Lunch Cube To Go - 1.4 L. - Klar/Ocean Blue None Why is the nipple clearSistema Food Storage Container Lunch Cube To Go 1. 4 L. (Minty Teal) Material: Plastic free from BPA and Phthalates. Cleaning: Can be washed in the dishwasher on the top shelf, but for increased durability, hand washing is recommended. Suitable for storage in the freezer and heating in the microwave (without lid). Lunch box with practical compartments for example fruits vegetables on top, food and juice box at the bottom. Manufactured at Sistemas own