The BIBS nipple is natural rubber: skip BIBS if anyone in the house has a latex allergy, and choose a glass bottle with a silicone nipple instead. The screw ring is plastic and sits outside the milk. Worried about drops? A cotton or knit bottle sleeve helps.
BIBS glass bottle, natural rubber nipple, 225 ml: The nipple is natural rubber latex: skip it if your baby or anyone in the house has a latex allergy.
Evenflo glass 4 oz 6-pk: The nipple is silicone and the collar is plastic; only the bottle is glass.
Evenflo glass 8 oz 6-pk: The nipple is silicone and the collar is plastic; only the bottle is glass.