Dr. Brown's Glass Anti-Colic Baby Bottle, Narrow 118 ml 2-Pack — Level 1 Slow Flow, Borosilicate

Dr. Brown's Anti-Colic Options+ Narrow Glass Bottle is a 4 oz borosilicate glass baby bottle with an internal vent and Level 1 slow-flow nipple designed to reduce feeding interruptions and help babies feed at a steady pace.

This two-pack of narrow 4 oz/120 mL glass bottles pairs Dr. Brown's Natural Flow internal vent system with a level 1 silicone nipple for slow, consistent flow. The bottles are made from durable borosilicate glass that tolerates temperature changes and repeated sterilization. Designed for newborns and early feeders, the set supports a breastfeeding-like latch and offers the option to remove the vent as feeding needs evolve.

How does the vent system affect feeding?

The internal vent helps separate air from milk so babies swallow less air during feeds, which can reduce common feeding interruptions like excessive burping or spit-up. The system aims to maintain a steady milk flow similar to breastfeeding so infants can control their pace.

• Internal vent reduces air ingestion during feeding
• Vacuum-free nipple flow mirrors breastfeeding rhythm
• Vent can be removed as baby progresses to different flow stages

What makes the glass material different from plastic bottles?

These bottles are built from borosilicate glass, which is more resistant to thermal shock and scratches than ordinary glass and does not retain odors or stains like some plastics. Glass offers a simple, reusable option for parents who prefer non-plastic feeding ware.

• Borosilicate glass tolerates hot and cold temperatures
• Doesn't absorb odors or staining from formula or breastmilk
• Easy to sanitize in sterilizers, boiling water, or top-rack dishwasher

Is the Level 1 slow-flow nipple suitable for my newborn?

Level 1 slow-flow silicone nipples are intended for newborns and infants who need a gentle, controlled flow. The breast-like shape supports a natural latch and helps with transitions between breast and bottle without forcing a faster flow than the baby can handle.

• Level 1 slow flow for newborns and early feeders
• Silicone nipple designed to encourage a natural latch
• Consistent flow lets baby set the feeding pace

How do I care for and adapt this bottle as my baby grows?

The bottle is dishwasher-safe on the top rack and compatible with common sterilizing methods. As your baby advances, you can switch to a faster nipple or remove the internal vent to change the feeding experience—so the same bottle can be used across multiple stages.

• Top-rack dishwasher safe and sterilizer compatible
• Vent assembly is removable for different feeding stages
• Works with Dr. Brown's nipple sizes as your baby advances

Who is this for: Parents who want a reusable, non-plastic feeding option that supports a breastfeeding-like flow and reduces air ingestion during feeds. This two-pack of narrow 4 oz glass bottles fits newborn feeding routines, offers simple sanitation, and adapts as feeding skills develop—ideal for caregivers seeking durability, easy cleaning, and a controlled slow flow for early feeders.