Our baby bottles are made of the highest quality, thermal shock resistant borosilicate glass. This allows our 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. - Protective medical-grade silicone sleeve provides a tactile non-slip gripping surface and helps prevent breakage - While very durable, our bottles are still glass and are not unbreakable - Dishwasher safe (place cap parts and nipple on top rack/no need to remove silicone sleeve unless desired) - As baby grows we offer a range of caps (sippy and flat) to extend the life of your bottle - Includes polypropylene (PP#5) cap, ring and stopper.

The perfect starter bottle for baby. The Lifefactory 4oz borosilicate glass baby bottle comes with a silicone sleeve, polypropylene cap, ring, and stopper, and a Stage 1 (0-3 months) silicone nipple. These are wonderfully easy to clean: the bottle stays inside the silicone sleeve, and go right in the dishwasher. Buy a set of four and you'll have an extra in the fridge, ready for your daily routine. Made with high-quality materials and baby-friendly designs: you'll love these neat little bottles as much as your baby does! Size: 2.5"W x 2.5"D x 6"D.

UPC CODES LF110000C4, Sky: 718122150656 LF110003C4, Pink: 718122150250 LF110013C4, Mint: 814943021905 LF110014C4, Cantaloupe: 814943021912 LF110015C4, Blanket: 814943021929 LF110016C4, Lavender: 814943021936 LF110017C4, Banana: 814943021943 LG2161CCG4, Stone Gray: 814943026481

*Kit Contents:

1. Wide mouth Flanges (24mm) X2
2. Backflow Protectors X2
3. Tubing X2
4. Flat O-ring X2
5. Duckbill Valves X4
6. Bottles  X2
7. O-Ring X2
8. Cap  X2

Work with Spectra S2, Spectra S1, Spectra 9 Plus Breastpump. Nipples and Dome Caps are NOT included in this kit

Other flange sizes available at Maymom: 15mm, 17mm, 19mm, 21mm, 24mm, 25mm, 27mm, 28mm, 30mm, 32mm

*All pump parts made by Maymom. Not Original Spectra S2 Accessories. Not Original Spectra S1 Accessories. Not Original Spectra Pump Parts

*Compatible and interchangeable with Spectra pump parts. Same suction power as OEM parts. Replace Spectra Flanges, Spectra Duckbill Valves, Spectra Backflow Protectors, Spectra Tubings, Spectra Bottles (Wide Mouth). 

*The One-piece cap of Maymom bottle includes sealing ring for secure seal. NO waste of milk. Designed for travel and storage of formula or breast milk. It's also perfect to convert baby feeding bottle to storage or snack container

*Material does NOT contain any BPA. Can be sanitized with water steam, boiling water or microwave-steam bags. Comply with FDA regulations for plastic materials that contact food

Frequently Asked Questions
Q: How to avoid breaking the backflow protector during setup with the flange?

A: Turn to insert the backflow protector into and off from the flange with care. DO NOT push in or rock straight in and out with force. It will break.

Q: Does the bottle include a nipple?

A: No, the bottle includes one-piece cap WITHOUT nipple.

Q: Where can I find the size marking on the flange?

A: It is marked at the end of the nipple tunnel.

Q: How do I choose the flange sizes?

A: Since your nipples will enlarge after pumping, measure the diameter of your nipples AFTER a pumping session. Do NOT include the areola. Fitting is available from Donna Bruschi, IBCLC.

Q: How do I clean them?

A: Disassemble all parts. Clean them with soapy water, and rinse with tap water. Sterilize all parts with water steam for 15 minutes or in boiling water for 5 minutes. When using boiling water, make sure to cover all parts with water to avoid melting them.

Q: Are they dishwasher safe?

A: You may dishwash flanges, bottles and backflow protectors on top rack with LOW heat drying. However, we DO NOT suggest dishwashing the duckbill valves. Please handwash the valves with care.