
Philips Avent Natural Response Glass Baby Bottle, 4oz
Wide-neck borosilicate glass bottle with a silicone nipple designed for combined breast and bottle feeding.

Standard wide-mouth mason jar (borosilicate glass) with food-grade silicone nipple adapter. No BPA, no polycarbonate.
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Standard mason jar body — borosilicate glass with a food-grade silicone nipple adapter, no BPA, no phthalates, no polycarbonate. The glass is a standard mason jar, so replacements are widely available. Unusual and honest design; the stainless steel lid ring is the only non-glass or non-silicone part.
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Wide-neck borosilicate glass bottle with a silicone nipple designed for combined breast and bottle feeding.

100% food-grade silicone bottle — body, breast-shaped dome, and collar are all silicone. Squeeze-flex design for easier latch.

Fully silicone baby bottle — body, mound, and dual anti-colic vents are all platinum-cured food-grade silicone. No plastic shell.

Narrow-neck glass bottle with an optional internal vent system. The vent insert is removable once feeding stabilizes.

Borosilicate glass bottle with a food-grade silicone sleeve. The glass interior is the only material in contact with milk.

Medical-grade stainless steel body; NSF-certified food-grade silicone nipple; no internal plastic liner.