The 4 oz bottles come with Stage 1 (0-3 mos) nipples.

These baby bottles are made of the highest quality, thermal shock resistant borosilicate glass. This allows our bottles to transition safely from freezer to boiling water. The silicone sleeves provide a good gripping surface for little hands and help protect against the occasional drop.

- Protective medical-grade silicone sleeve provides a tactile non-slip gripping surface and helps prevent breakage

- While very durable, our bottles are still glass and are not unbreakable

- Dishwasher safe (place cap parts and nipple on top rack/no need to remove silicone sleeve unless desired)

- As baby grows there are a range of caps (sippy and flat) to extend the life of your bottle

- Includes polypropylene (PP#5) cap, ring and stopper and silicone nipple

- Compatible with most major breast pumps

- All components are made in the U.S. or Europe

- Product assembled in the U.S.

- All materials are FDA approved

- BPA/BPS-free and phthalate-free

- 4 oz (120 ml) with Stage 1 (0-3 mos) nipple