Are the new nipple designs compatible with the old wide neck bottles?

I'm having the exact same problem! Seriously how do I get a dr. Browns premie nipple for my dr. Browns wide bottle. The ones I just bought do not fit. I'm convinced they are fake.

Do these fit Comotomo (Como tomo) bottles?

Thank you for your inquiry. The Dr. Brown's nipples are designed to function with the Dr. Brown's bottles for proper bottle and venting function. Using the Dr. Brown's nipples with another brand may leak or flow too fast or too slow.

Do these fit the glass options plus?

I bought these level 2 for my glass options plus and fit just fine.

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🍼 Fast Flow, Calm Nights, Happy Baby!

COLIC NOT HERE - Clinically proven internal vent system reduces colic, spit-up, burping, and gas for peaceful feeding and happier nights.
SAFE EASY CARE - Made from 100% BPA-free silicone, dishwasher safe, and compatible with all Dr. Brown’s Options+ wide-neck bottles for hassle-free cleaning.
CONSISTENT CALM - Vacuum-free feeding mimics breastfeeding flow, allowing baby to feed at their own comfortable pace without interruptions.
FAST FLOW NO FUSS - Level 4 nipple delivers the fastest flow designed for babies 9 months and older, keeping up with their growing appetite.
BREAST LIKE COMFORT - Wide-neck, breast-shaped nipple encourages natural latch, easing transitions between breast and bottle feeding.

Dr. Brown’s Natural Flow® Level 4 Wide-Neck Baby Bottle Silicone Nipple offers a fast flow rate tailored for babies 9 months and older. Featuring a clinically proven anti-colic vent system, it reduces discomfort from gas and spit-up while preserving milk nutrients. The breast-like wide-neck design supports natural latch and smooth transitions between breast and bottle. Made from soft, BPA-free silicone, it’s dishwasher safe and compatible with all Dr. Brown’s Options+ wide-neck bottles, ensuring safe, consistent, and comfortable feeding every time.

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Model Number	WN4601-WEB
Product Dimensions	11.43 x 17.27 x 7.37 cm; 120 g
Item model number	WN4601-WEB
Material Type	Silicone
Material-free	Latex Free
Number of items	1
Style	6 Pack, Level 4
Batteries required	No
Bottle nipple type	Fast Flow
Item Weight	120 g

Dr. Brown’s Natural Flow® Level 4 Wide-Neck Baby Bottle Silicone Nipple, Fast Flow, 9m+, 100% Silicone Bottle Nipple, 6 Pack

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