The item you are asking about is the Philips Avent Natural Response Glass Baby Bottle, 240ML (8 oz).

This is one of Philips Avent's premium baby bottles designed to closely mimic the natural experience of breastfeeding.

Here are the key features of this specific product:

Brand and Line: Philips Avent Natural Response.

Material: Pharmaceutical Grade Borosilicate Glass, which is highly durable, heat-resistant, thermal-shock resistant (safe for fridge, warming, and sterilization), and retains its purity over time

Capacity: 240 ml (8 oz).

Nipple Technology (Natural Response):

The unique Natural Response Nipple only releases milk when the baby is actively drinking and compressing the teat.

When the baby pauses to swallow or breathe, the milk flow naturally pauses, just like during breastfeeding. This allows the baby to control the pace and rhythm of the feed.