Made of the highest quality thermal shock resistant borosilicate glass, the Lifefactory 4 ounce Glass Bottle transitions 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, these 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 extend the life of your bottle using sippy caps
Includes polypropylene (PP#5) cap, ring and stopper and silicone nipple
Compatible with most major breast pumps
All materials are FDA approved
4 oz bottle comes with Stage 1 (0-3 mos) nipples.