Lifefactory 4oz Glass Baby Bottle with Silicone Sleeve - Stone Gray | live price, prepared checkout

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Checked facts

Each fact below was checked against the source it cites before it was published. Each carries that source's link and the time RoboTrunk read it. 79 checked facts, checked 2026-10-10T04:52:31.487Z. Research depth: trimmed read. Deep read: the store's own data and 10 outside pages (the store's own product page; maker page; blog; review; regulator recall search (CPSC (United States)); regulator recall search (Health Canada)), each read in full by RoboTrunk and trimmed to its main content, then written up and checked. Facts from the maker or a manual quote the page word for word; what real users report is summarised with a link to the page read. Recall status was checked directly with CPSC (United States), Health Canada: CPSC recall search for Lifefactory returned no recall records; Health Canada recall records mentioning Lifefactory: none.

• identity: The maker's store lists Stone Gray among the 4oz Glass Baby Bottle color variants and describes the bottle as coming with a silicone sleeve, polypropylene cap, ring, stopper, and Stage 1 silicone nipple.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-09T19:03:04.916Z.
• description: Designed for everyday newborn feeding with durable glass, a protective silicone sleeve, and included Stage 1 nipple.. Source: https://dd1dfe-a3.myshopify.com/products/lifefactory-4oz-glass-baby-bottle-with-silicone-sleeve-stone-gray (guide), read 2026-10-10T04:34:53.206Z.
• description: Maker describes it as 4oz borosilicate glass baby bottle with silicone sleeve, polypropylene cap, ring, stopper, and Stage 1 silicone nipple.. Source: https://lifefactory.com/products/4oz-glass-baby-bottle (guide), read 2026-10-10T04:34:55.179Z.
• lead safety: The brand's glass bottles do not use lead-based paint, unlike some other brands.. Source: https://blueandhazel.com/the-best-glass-baby-bottle (blog, Blue and Hazel - Homeschool, Motherhood, and Lifestyle, updated 2022-05-18), read 2026-10-10T04:34:57.994Z.
• longevity: The bottles lasted years and were reused as milk glasses and water bottles after the baby stage.. Source: https://mindlessmom.com/lifefactory-bottles/ (blog, Mindless Mom, updated 2020-06-13), read 2026-10-10T04:35:00.517Z.
• materials: All materials used in the bottle are FDA approved.. Source: https://www.naturalbabygoods.com/lifefactory-glass-baby-bottle-with-silicone-sleeve-review-and-giveaway/ (blog, Natural Mama | Mom Blog Featuring Daily Product Reviews and Giveaways, updated 2016-11-02), read 2026-10-10T04:35:03.086Z.
• venting: There is no venting system to avoid colic; may be fine for babies who do not need special venting.. Source: https://www.babybargains.com/baby-bottle-review-lifefactory/ (review), read 2026-10-10T04:35:06.958Z.
• materials: The materials are FDA approved, and the glass is medical grade; the sleeve is BPA/BPS-free and phthalate-free.. Source: https://ourstart.com/lifefactory-4-ounce-bpa-free-glass-baby-bottle-product-review/ (review), read 2026-10-10T04:35:11.361Z.
• safety testing: The bottle is free of BPA, BPS, phthalates, lead, and latex, and third-party XRF testing found no detectable lead, cadmium, mercury, or arsenic.. Source: https://glassbabybottle.com/lifefactory-glass-baby-bottles/ (review), read 2026-10-10T04:35:17.765Z.
• materials: The bottle is made from thermal shock-resistant borosilicate glass.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-09T19:03:04.916Z.
• materials: Made with thermal shock-resistant borosilicate glass and includes polypropylene cap, ring, stopper, and Stage 1 silicone nipple for ages 0-3 months.. Source: https://dd1dfe-a3.myshopify.com/products/lifefactory-4oz-glass-baby-bottle-with-silicone-sleeve-stone-gray (guide), read 2026-10-10T04:34:53.206Z.
• materials: Made with high quality thermal shock-resistant borosilicate glass.. Source: https://lifefactory.com/products/4oz-glass-baby-bottle (guide), read 2026-10-10T04:34:55.179Z.
• durability: The bottles survived many drops from highchairs, strollers, and backpacks, which users credit to the thermal-shock-resistant glass and silicone sleeve.. Source: https://blueandhazel.com/the-best-glass-baby-bottle (blog, Blue and Hazel - Homeschool, Motherhood, and Lifestyle, updated 2022-05-18), read 2026-10-10T04:34:57.994Z.
• care: They are dishwasher safe on the top rack and are fairly leak-proof, though liquid can escape if held the wrong way.. Source: https://mindlessmom.com/lifefactory-bottles/ (blog, Mindless Mom, updated 2020-06-13), read 2026-10-10T04:35:00.517Z.
• fit: The bottle has a larger circumference than regular glass bottles, but the silicone sleeve makes it easier for a baby to grip.. Source: https://www.naturalbabygoods.com/lifefactory-glass-baby-bottle-with-silicone-sleeve-review-and-giveaway/ (blog, Natural Mama | Mom Blog Featuring Daily Product Reviews and Giveaways, updated 2016-11-02), read 2026-10-10T04:35:03.086Z.
• value: The bottle is expensive compared with Evenflo glass bottles, even though the sleeve is included.. Source: https://www.babybargains.com/baby-bottle-review-lifefactory/ (review), read 2026-10-10T04:35:06.958Z.
• durability: The silicone sleeve protects against breaking; a drop on concrete left no chip.. Source: https://ourstart.com/lifefactory-4-ounce-bpa-free-glass-baby-bottle-product-review/ (review), read 2026-10-10T04:35:11.361Z.
• safety: There are no painted markings or decorations on the glass, avoiding lead in exterior paints.. Source: https://glassbabybottle.com/lifefactory-glass-baby-bottles/ (review), read 2026-10-10T04:35:17.765Z.
• capacity: Capacity is 4 oz / 120 ml.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-09T19:03:04.916Z.
• care: Silicone sleeve stays on during washing for simple care.. Source: https://dd1dfe-a3.myshopify.com/products/lifefactory-4oz-glass-baby-bottle-with-silicone-sleeve-stone-gray (guide), read 2026-10-10T04:34:53.206Z.
• grip: Protective silicone sleeve helps prevent breakage and provides an easier grip.. Source: https://lifefactory.com/products/4oz-glass-baby-bottle (guide), read 2026-10-10T04:34:55.179Z.
• silicone sleeve: The sleeve is a thin layer of 100% silicone that covers the bottle including the bottom; its holes help grip even when not freshly washed.. Source: https://blueandhazel.com/the-best-glass-baby-bottle (blog, Blue and Hazel - Homeschool, Motherhood, and Lifestyle, updated 2022-05-18), read 2026-10-10T04:34:57.994Z.
• durability: The silicone sleeve helps prevent breakage; the bottles survived many drops, though about a quarter of drops caused breakage when the bottle landed on the exposed neck.. Source: https://mindlessmom.com/lifefactory-bottles/ (blog, Mindless Mom, updated 2020-06-13), read 2026-10-10T04:35:00.517Z.
• care: The sleeve can be sterilized with the bottle and is dishwasher safe.. Source: https://www.naturalbabygoods.com/lifefactory-glass-baby-bottle-with-silicone-sleeve-review-and-giveaway/ (blog, Natural Mama | Mom Blog Featuring Daily Product Reviews and Giveaways, updated 2016-11-02), read 2026-10-10T04:35:03.086Z.
• opening: The review reports the narrow opening makes it hard to pour in formula and to clean (another review describes the bottle as having a large mouth that is easy to clean, so the sources disagree).. Source: https://www.babybargains.com/baby-bottle-review-lifefactory/ (review), read 2026-10-10T04:35:06.958Z.
• durability: The bottles are durable for dishwasher, freezer, and reheating use with no early wear and tear.. Source: https://ourstart.com/lifefactory-4-ounce-bpa-free-glass-baby-bottle-product-review/ (review), read 2026-10-10T04:35:11.361Z.
• included: The 4 oz version comes with a Stage 1 slow-flow nipple for 0-3 months.. Source: https://glassbabybottle.com/lifefactory-glass-baby-bottles/ (review), read 2026-10-10T04:35:17.765Z.
• included: Includes Stage 1 silicone nipple, polypropylene cap, ring, and stopper.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-09T19:03:04.916Z.
• features: Protective silicone sleeve helps improve grip and reduce breakage.. Source: https://dd1dfe-a3.myshopify.com/products/lifefactory-4oz-glass-baby-bottle-with-silicone-sleeve-stone-gray (guide), read 2026-10-10T04:34:53.206Z.
• use: Bottles can be used to freeze liquids; see Care & Use Guide.. Source: https://lifefactory.com/products/4oz-glass-baby-bottle (guide), read 2026-10-10T04:34:55.179Z.
• silicone sleeve: The sleeve is difficult to pull off but can be removed by soaping it up for a deeper wash.. Source: https://blueandhazel.com/the-best-glass-baby-bottle (blog, Blue and Hazel - Homeschool, Motherhood, and Lifestyle, updated 2022-05-18), read 2026-10-10T04:34:57.994Z.
• compatibility: Spouts and lids are interchangeable, allowing the bottle to grow with the child and convert to a sippy cup.. Source: https://mindlessmom.com/lifefactory-bottles/ (blog, Mindless Mom, updated 2020-06-13), read 2026-10-10T04:35:00.517Z.
• nipple: The nipple is soft and durable.. Source: https://www.naturalbabygoods.com/lifefactory-glass-baby-bottle-with-silicone-sleeve-review-and-giveaway/ (blog, Natural Mama | Mom Blog Featuring Daily Product Reviews and Giveaways, updated 2016-11-02), read 2026-10-10T04:35:03.086Z.
• nipple: The nipple can collapse and the bottle can leak if tightened too much.. Source: https://www.babybargains.com/baby-bottle-review-lifefactory/ (review), read 2026-10-10T04:35:06.958Z.
• weight: Compared with other glass bottles, this bottle is described as lightweight.. Source: https://ourstart.com/lifefactory-4-ounce-bpa-free-glass-baby-bottle-product-review/ (review), read 2026-10-10T04:35:11.361Z.
• materials: BPA-free and phthalate-free.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-09T19:03:04.916Z.
• specs: UPC 814943026481.. Source: https://dd1dfe-a3.myshopify.com/products/lifefactory-4oz-glass-baby-bottle-with-silicone-sleeve-stone-gray (guide), read 2026-10-10T04:34:53.206Z.
• safety: BPA-free and phthalate-free; tested to meet FDA standards.. Source: https://lifefactory.com/products/4oz-glass-baby-bottle (guide), read 2026-10-10T04:34:55.179Z.
• materials: Bottles, sleeves, and nipples are BPA/BPS-free, phthalate-free, and dishwasher safe.. Source: https://blueandhazel.com/the-best-glass-baby-bottle (blog, Blue and Hazel - Homeschool, Motherhood, and Lifestyle, updated 2022-05-18), read 2026-10-10T04:34:57.994Z.
• weight: Glass makes the bottle heavier than plastic and can make it harder for a child to hold independently.. Source: https://mindlessmom.com/lifefactory-bottles/ (blog, Mindless Mom, updated 2020-06-13), read 2026-10-10T04:35:00.517Z.
• capacity: The 4 oz bottle was used for water and milk, and the tester planned to buy the 9 oz size as the child grew.. Source: https://www.naturalbabygoods.com/lifefactory-glass-baby-bottle-with-silicone-sleeve-review-and-giveaway/ (blog, Natural Mama | Mom Blog Featuring Daily Product Reviews and Giveaways, updated 2016-11-02), read 2026-10-10T04:35:03.086Z.
• nipple: The nipple is not considered a good choice for breastfeeding babies.. Source: https://www.babybargains.com/baby-bottle-review-lifefactory/ (review), read 2026-10-10T04:35:06.958Z.
• extend use: An additional affordable piece turns the bottle into a sippy cup.. Source: https://ourstart.com/lifefactory-4-ounce-bpa-free-glass-baby-bottle-product-review/ (review), read 2026-10-10T04:35:11.361Z.
• care: Dishwasher safe; place cap parts and nipple on top rack.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-09T19:03:04.916Z.
• specs: Height 6 in, width 2.5 in, depth 2.5 in, weight 0.4 lb, capacity 4 oz / 120 ml.. Source: https://dd1dfe-a3.myshopify.com/products/lifefactory-4oz-glass-baby-bottle-with-silicone-sleeve-stone-gray (guide), read 2026-10-10T04:34:53.206Z.
• origin: Made in USA and France.. Source: https://lifefactory.com/products/4oz-glass-baby-bottle (guide), read 2026-10-10T04:34:55.179Z.
• compatibility: Sippy cup lids and different stage nipples are available; the bottles fit other standard nipples and most breast pumps, though Lifefactory lids screw on more easily.. Source: https://blueandhazel.com/the-best-glass-baby-bottle (blog, Blue and Hazel - Homeschool, Motherhood, and Lifestyle, updated 2022-05-18), read 2026-10-10T04:34:57.994Z.
• durability: The silicone shell is not foolproof; one bottle broke and pieces were found later.. Source: https://mindlessmom.com/lifefactory-bottles/ (blog, Mindless Mom, updated 2020-06-13), read 2026-10-10T04:35:00.517Z.
• quality: Fans say the quality is good, and users love the glass bottle and silicone sleeve.. Source: https://www.babybargains.com/baby-bottle-review-lifefactory/ (review), read 2026-10-10T04:35:06.958Z.
• cleaning: The review says the large mouth makes the bottle easy to clean and that it is dishwasher safe (another review describes the opening as narrow and hard to clean, so the sources disagree).. Source: https://ourstart.com/lifefactory-4-ounce-bpa-free-glass-baby-bottle-product-review/ (review), read 2026-10-10T04:35:11.361Z.
• use: Can be used to freeze liquids when following the Care & Use Guide.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-09T19:03:04.916Z.
• structured data: Structured data gives SKU LG2161CCG4 and brand Lifefactory.. Source: https://dd1dfe-a3.myshopify.com/products/lifefactory-4oz-glass-baby-bottle-with-silicone-sleeve-stone-gray (guide), read 2026-10-10T04:34:53.206Z.
• care: Dishwasher safe; place cap parts and nipple on top rack; no need to remove silicone sleeve.. Source: https://lifefactory.com/products/4oz-glass-baby-bottle (guide), read 2026-10-10T04:34:55.179Z.
• size: The 4 oz bottle is small and preferred for small feeds; it holds about 5 oz when filled to the top.. Source: https://blueandhazel.com/the-best-glass-baby-bottle (blog, Blue and Hazel - Homeschool, Motherhood, and Lifestyle, updated 2022-05-18), read 2026-10-10T04:34:57.994Z.
• materials: The bottle is borosilicate glass, the cap is BPA/BPS-free phthalate-free plastic, and the sleeve is silicone, with assembly in France or the U.S.. Source: https://mindlessmom.com/lifefactory-bottles/ (blog, Mindless Mom, updated 2020-06-13), read 2026-10-10T04:35:00.517Z.
• rating: The reviewer rated the bottle B- overall.. Source: https://www.babybargains.com/baby-bottle-review-lifefactory/ (review), read 2026-10-10T04:35:06.958Z.
• appearance: Many parents comment that the bottle is beautiful.. Source: https://ourstart.com/lifefactory-4-ounce-bpa-free-glass-baby-bottle-product-review/ (review), read 2026-10-10T04:35:11.361Z.
• origin: Made in the USA and France; assembled in the USA.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-09T19:03:04.916Z.
• specs: Height 6, width 2.5, depth 2.5, weight 0.4, 4 oz (120 ml).. Source: https://lifefactory.com/products/4oz-glass-baby-bottle (guide), read 2026-10-10T04:34:55.179Z.
• durability: Glass can break, especially on asphalt; one bottle broke in three years, but the silicone sleeve reduced breakage compared with sleeveless bottles.. Source: https://blueandhazel.com/the-best-glass-baby-bottle (blog, Blue and Hazel - Homeschool, Motherhood, and Lifestyle, updated 2022-05-18), read 2026-10-10T04:34:57.994Z.
• customer service: Customer service was poor; a request for replacement glasses was passed around for a month and then refused.. Source: https://mindlessmom.com/lifefactory-bottles/ (blog, Mindless Mom, updated 2020-06-13), read 2026-10-10T04:35:00.517Z.
• included: The 4 oz and 9 oz bottles come with a silicone sleeve, French-silicone nipple, and dome cap with ring and stopper, made in the U.S. and Europe.. Source: https://www.babybargains.com/baby-bottle-review-lifefactory/ (review), read 2026-10-10T04:35:06.958Z.
• measurements: Ounce measurements are on the plastic sleeve rather than the glass bottle, which some find harder for accurate measuring.. Source: https://ourstart.com/lifefactory-4-ounce-bpa-free-glass-baby-bottle-product-review/ (review), read 2026-10-10T04:35:11.361Z.
• color: Color: Stone Gray.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-09T19:03:04.916Z.
• origin detail: Glass and silicone nipple made in France; cap and silicone sleeve made in the U.S.; product assembled in the U.S.. Source: https://lifefactory.com/products/4oz-glass-baby-bottle (guide), read 2026-10-10T04:34:55.179Z.
• value: The bottles are considered expensive, but longevity and sippy-cup conversion offset the cost.. Source: https://blueandhazel.com/the-best-glass-baby-bottle (blog, Blue and Hazel - Homeschool, Motherhood, and Lifestyle, updated 2022-05-18), read 2026-10-10T04:34:57.994Z.
• measurements: The 4 oz bottle measures 6 inches high by 2.5 inches wide and weighs 0.4 lbs.. Source: https://mindlessmom.com/lifefactory-bottles/ (blog, Mindless Mom, updated 2020-06-13), read 2026-10-10T04:35:00.517Z.
• nipple: The flow allows a lot of air into the nipple, which may not suit babies with bad reflux.. Source: https://ourstart.com/lifefactory-4-ounce-bpa-free-glass-baby-bottle-product-review/ (review), read 2026-10-10T04:35:11.361Z.
• weight: Weight is 0.4 lb.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-09T19:03:04.916Z.
• item numbers: Stone Gray item number LG2161CCG4.. Source: https://lifefactory.com/products/4oz-glass-baby-bottle (guide), read 2026-10-10T04:34:55.179Z.
• nipple: The nipple can collapse if the child drinks too fast with vigorous sucking.. Source: https://ourstart.com/lifefactory-4-ounce-bpa-free-glass-baby-bottle-product-review/ (review), read 2026-10-10T04:35:11.361Z.
• materials: Borosilicate glass allows the bottle to transition safely from freezer to boiling water.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-09T19:03:04.916Z.
• growth: Bottles grow with baby via nipples and caps.. Source: https://lifefactory.com/products/4oz-glass-baby-bottle (guide), read 2026-10-10T04:34:55.179Z.
• origin: The bottle is made in the United States and Europe and assembled in the United States.. Source: https://ourstart.com/lifefactory-4-ounce-bpa-free-glass-baby-bottle-product-review/ (review), read 2026-10-10T04:35:11.361Z.
• durability: The bottles are durable but still glass and not unbreakable.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-09T19:03:04.916Z.
• care: Dishwasher safe; no need to remove silicone sleeve unless desired.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-09T19:03:04.916Z.
• included: Includes polypropylene (PP#5) cap, ring and stopper.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-09T19:03:04.916Z.
• nipple: Stage 1 (0-3 months) silicone nipple.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-09T19:03:04.916Z.
• extend use: Range of caps (sippy and flat) extend the life of the bottle.. Source: https://dd1dfe-a3.myshopify.com/products.json (listing), read 2026-10-09T19:03:04.916Z.

The full evidence pack, with every citation, source and gap.

Questions we researched but could not confirm

Every fact above is cited. To find them we read the store listing, the maker's page, blogs, owner reviews and the recall records of CPSC (United States) and Health Canada and searched for the manual, regulator recall notices, owner forums and video reviews. We also chased the questions below across those sources and found no reliable answer, so you know exactly where the evidence ends and never have to guess.

• What is the warranty period and what does it cover?
• Is the bottle microwave safe for heating milk?
• What is the exact neck diameter or thread size?
• Will the 4 oz bottle fit a standard stroller or car seat cup holder?
• Can the silicone sleeve be purchased separately?
• What is the bottle's weight in grams?
• What is the included Stage 1 nipple's exact flow rate?
• What are the full Care & Use Guide instructions?
• Is the bottle safe for boiling-water sterilization?
• Does the bottle fit standard diaper bag bottle pockets?
• What replacement nipples are available and at which stages?
• What is the maximum safe temperature for the bottle?
• Is the glass tempered or annealed?
• Can the bottle be used with a bottle warmer?
• Is the bottle compatible with anti-colic vent systems?

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