Here are answers to some “Frequently Asked Questions” about our products: how they’re made, why they’re good and how they’re used:


  1. What are the benefits of glass? Why should I buy a glass bottle over a plastic or metal one?

    Glass has been a trusted material for centuries. It is one of the greenest materials on the planet and is 100% recyclable. And, it is safe. You don’t have to worry about BPA/BPS or other unknown chemicals that can leach into liquids from plastic bottles. Moreover, water and beverages will taste better coming out of a glass bottle because glass is taste neutral—no unpleasant plastic or metallic taste.

    Those are the benefits to you. But using a Lifefactory reusable glass bottle also benefits the environment. Bottled water creates enormous quantities of waste. You’ll save money and Earth’s resources if you don’t buy bottled water.
  2. Where are Lifefactory bottles and components made?
    1. Adult Beverage Bottles (16 and 22 oz)
      1. All of the glass used for our beverage bottles is made in France and always has been.
      2. Our Classic Caps are made in Poland. Our Flip Caps are made in the U.S.
      3. All silicone sleeves used on our beverage bottles are made in the U.S. and always have been.
    2. Baby & Kids Bottles (4 and 9 oz)
      1. Our glass baby bottles are made in France and have been since mid 2009. From 2007 through early 2009, baby bottles were made in China before we made the switch to borosilicate glass made in France. The glass from France will have “France” on the bottom of the bottle.
      2. All silicone nipples on our baby bottles are made in France and always have been.
      3. The silicone sleeves on our baby bottles were originally made in China. We switched to U.S. made silicone sleeves on our baby bottles in mid 2010. Some of the Chinese made sleeves may still be for sale at some retail locations. If the sleeve is U.S. made it will say ‘Made in Racine, WI USA’ on the bottom.
      4. The cap/ring/stopper set and our solid flat caps have been made in China through early 2011 and are now being manufactured in the U.S.
      5. As of mid-2011, all Lifefactory components are manufactured in the U.S. or Europe.
  3. Why do Lifefactory bottles have a silicone sleeve?

    Our patent-pending silicone sleeves were designed not only to look stylish but also to protect the bottles and help prevent them from breaking. The material and design combine to improve the bottle’s tactile quality and grip, which prevents bottles from becoming slick with condensation (or sweat, for athletes) and reduces the potential for breakage.
  4. What are the sleeves on Lifefactory bottles made of?

    Our sleeves are made of medical-grade silicone, which is non-toxic and has been strength-tested for durability. Silicone is made from silica, the most common constituent of sand. It is a great alternative to plastics, which can leach chemicals, and to rubber or latex, to which some people are allergic.
  5. Does Lifefactory sell its sleeves separately? Do the sleeves fit on other bottles?

    A Lifefactory bottle is the combination of a glass bottle and complementary silicone sleeve designed in tandem. We only sell the complete package because that’s the only way to ensure the sleeve fits perfectly—plus it’s the only way we could attain our exceptional standards of quality. That’s why we don’t sell sleeves separately. We could never be sure that they would fit other bottles precisely.
  6. How do I wash the bottle?

    All components of every Lifefactory bottle—the glass bottle itself as well as the sleeve and cap (or nipple)—are dishwasher safe or can be hand washed.
  7. Can I put boiling water in my beverage bottle to make tea? Can I put the beverage bottle filled with water in the freezer?

    Lifefactory beverage bottles are made from soda lime glass. This is the same container glass used for wine bottles and other food storage containers. It is strong but not impervious to rapid temperature changes or impact. Like any bottle, it will expand and crack if left in the freezer or hit with boiling water.


    Lifefactory baby bottles are made from borosilicate glass. Borosilicate glass is known for its superior durability, chemical and heat resistance, and is excellent for use in chemical laboratory equipment and cookware. This allows the baby bottle to go from the freezer to boiling water pot without incident. 
  8. Do you need to take the sleeve off to wash a Lifefactory bottle?

    No, you can leave the sleeve on the bottle and wash the whole thing in the dishwasher. If you wish to remove the sleeve, it comes off best in warm, soapy water or with rubbing alcohol.
  9. How long will my order take to arrive?

    We do our best to process and ship every order as quickly as possible.  Please allow 2 business days for us to process and ship your order from the time it was placed. FedEx Ground usually takes seven to ten working days. If you are ordering on a Friday, your order will not be picked and shipped until the following Monday at the earliest. We do not ship on public holidays.
  10. What is the Lifefactory.com e-store’s return policy?

    We hope that you are completely satisfied with your Lifefactory products.This return and exchange policy applies only to purchases made on the lifefactory.com site. If you purchased a Lifefactory product at a retail store or from another online site and are interested in returning that product, please contact the original store or site directly.

    If for some reason you are not satisfied with a product you purchased from lifefactory.com, you can return it in unused and new condition within 30 days of the purchase date for a credit, exchange or refund. We do not credit or refund shipping charges. After 30 days, we will not accept returns for any reason other than manufacturer defect. If you need to return or exchange a product please call us at 415-729-9820.

    We do not accept returns of used products (unless they are somehow defective). Bottles that are damaged due to human miscue and gravity (e.g., dropped and broken) are not considered defective and are not eligible for refund or exchange. We do sell replacement glass for all sizes of our bottles.
  11. Are your products microwave safe?

    Our glass baby bottles and silicone sleeves are all microwave safe. We get asked by lots of moms if it is OK to use a microwave to warm up milk or formula in our glass bottles - the answer is yes. Please remove tops and nipples before microwaving. Please test the temperature to ensure that it is safe to drink. We also recommend shaking the liquid before testing the temperature to eliminate the hotspots that can occur with many microwaves. Some of our labels and inserts state that our products are not intended for use in a microwave oven. This is a general statement because our bottles are not specifically developed as cookware/bakeware.


  1. Why is glass a better choice for baby bottles?

    Glass is clearly a better choice for baby bottles. Plastic bottles can leach chemicals into milk or juice (including BPA/BPS); glass does not. Plastic bottles can scratch, and scratches can harbor bacteria—glass does not. And plastic bottles typically end up in landfills when their useful life is over; glass is recyclable and reusable, and is better for the environment.

    Most parents like the idea of using glass but worry about breakage. Lifefactory offers a solution by combining a sturdy glass bottle with a custom-designed silicone sleeve to protect the glass from breaking.
  2. Your new baby bottles say they are “thermal shock resistant”. What does this mean?

    Lifefactory is proud to bring one of the first borosilicate glass baby bottles to the American market. Borosilicate glass is pharmaceutical-grade glass that is more expensive, purer, and higher quality than other glass baby bottles that are made with soda lime. Thermal shock resistant means the glass is stronger and can withstand extreme temperature changes (from boiling to freezing) without breaking. Soda lime bottles do not have this quality. For mothers who pump and store breast milk, our bottles can go from freezer to refrigerator to hot water for feeding all in one step.
  3. What safety certifications does Lifefactory baby bottles have?

    At Lifefactory, we are very concerned about infant safety. We have voluntarily had our bottles tested for safety and integrity by an independent third party lab, Bureau Veritas. The bottles are in compliance with the requirements of CPSIA 2008 and 16 CFR 1500 in the United States. The bottles are EN 14350 compliant in Europe.
  4. Why are Lifefactory baby bottles more expensive than some other glass baby bottles on the market?

    It’s true that Lifefactory baby bottles are somewhat more expensive than some products, but we believe the combination of safety, quality, and design makes them an excellent value. Consider our materials: Borosilicate glass costs more but makes our baby bottles stronger and thermal shock resistant. The silicone sleeve (the hallmark of our bottles, which gives them their distinctive look, improves their “gripability,” and helps prevent breakage) is much more expensive to manufacture than plastic—particularly the thick, high-grade silicone that we employ. Additionally, we use top-quality, FDA-approved plastic for our caps and rings, and our French nipples are medical grade silicone; both of these factors affect product pricing. A final contributor to the price of Lifefactory bottles is our commitment to rigorous product testing, which ensures safety, durability, and minimal environmental impact.
  5. How do I wash/sterilize the bottle and its parts?

    Boil or run the bottle through the dishwasher initially to sterilize. All parts are dishwasher-safe, or they can be hand-washed. The bottle and sleeve may be boiled together. You don’t need to remove the sleeve to wash the bottle, but if you wish to remove the sleeve, it comes off best in warm, soapy water. Nipples should be washed on the top rack of the dishwasher only.
  6. Do Lifefactory bottles have a venting system?

    Yes, our bottles have a traditional venting system, in which ridges are located on the flange of the nipple. Tightening the ring too much will prevent ventilation and may cause nipple collapse.
  7. What kind of nipple is on Lifefactory bottles?

    Our nipples are made of silicone produced in France, where our manufacturer is that country’s leading supplier of nipples. The nipples that come with our 4 oz. bottles are Stage 1 (0-3 months), and those that come with our 9 oz. bottles are Stage 2 (3-6 months).
  8. Does Lifefactory carry other Stage nipples?

    Yes. All of our nipples—Stage 1 (0-3 months), Stage 2 (3-6 months), Stage 3 (6+ months), and the Y-cut nipple—are available at our online store. You can also check with your local Lifefactory retailer for availability.
  9. Will other nipples fit this bottle?

    Yes, any standard size nipple will fit on our bottle. Wide neck nipples will not fit.
  10. Your nipples are not marked according to Stage. How do I tell them apart?

    The difference between the various nipples is flow rate, which is determined by the size of the opening. As it is difficult to distinguish the hole size on a nipple by simply looking at it, we recommend washing the nipples separately according to Stage, or not opening new nipple packages until the nipple Stage that it contains is appropriate for use. Our nipples are not labeled according to Stage for manufacturer-related reasons.
  11. Does Lifefactory sell replacement parts?

    We sell replacement glass bottles, silicone nipples, solid caps for breast milk storage, and caps/ring/stopper sets. Find them at our online store.


  1. What is the new Lifefactory Beverage Bottle?

    In our first major product line extension, we’ve introduced a product for adults: 22 ounce (650ml) and 16 ounce (450ml) glass bottles with removable silicone sleeves that are ideal for people who carry water with them in the car, outdoors, in the office, or at the gym—or even for use at home. If you typically use bottled water, the Lifefactory Beverage Bottle is perfect for you.
  2. How is the Lifefactory Beverage Bottle different from (and better than) plastic or metal reusable bottles?

    First and foremost, it’s glass, which means it’s free of BPA/BPS, phthalate, PVC, and polycarbonate—nothing can leach into your water or other beverage in a glass bottle. Glass is also taste-neutral; no plastic or metallic taste will affect your beverage. The patent-pending silicone sleeve adds a distinctive touch to each bottle, and makes the bottle easier to grip and helps protect it from breakage. The silicone sleeve is also non-toxic and plastic-free. Finally, the wide-mouth design makes it easy to fill (add your own ice, citrus slices, tea bags, etc.), easy to drink from, and easy to clean.
  3. How do I wash/sterilize the bottle and its parts?

    Lifefactory bottles can be initially sterilized in a dishwasher (all parts are dishwasher-safe) or can be handwashed. You don’t need to remove the sleeve to wash the bottle, but if you wish to remove the sleeve, it comes off best in warm, soapy water.