Lifefactory are made of the highest quality, thermal shock resistant borosilicate glass. This allows these glass 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.

• BPA and phthalate free
• 4 oz: Stage 1 (0-3 months) nipple, 9 oz: Stage 2: (3-6 months) nipple
• Dishwasher safe
• All components are made in the USA or Europe