THERMOS FUNtainer 12 oz Replacement Straws – BPA Free Silicone Refills Safe for Developing Teeth and Gums
THERMOS FUNtainer 12 oz Replacement Straws – BPA Free Silicone Refills Safe for Developing Teeth and Gums
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Why you'll love it
- Official THERMOS brand compatibility removes the guesswork of finding a fitting third-party straw
- Buying replacements is far cheaper than replacing the whole bottle when one straw wears out
- Soft silicone is gentle on developing teeth and gums compared to hard plastic straws
- Having multiple straws on hand prevents a meltdown when the current one gets lost or dirty
- Larger 6-pack size offers long-term value for families juggling multiple kids and bottles
- Straws are removable and easy to clean, fitting into existing bottle-washing routines
Perfect for
- Replacing chewed, stained, or worn-out straws on existing FUNtainer bottles without buying a new bottle
- Rotating a clean straw in while the previous one is being washed for continuous hydration
- Stocking a 6-pack in the pantry to avoid last-minute runs when straws go missing
- Packing backup straws in school lunch boxes and daycare backpacks
- Keeping spare straws in the car cup holder for messy snack runs and park outings
Product Information
Two pack contains 4 replacement straws for THERMOS FUNTAINER 12 Ounce Insulated Kids Straw Bottles
Includes four soft silicone straws and 4 hard straw stems
Not for use with hot beverages
Not intended for carbonated beverages
Material: Silicone
Color: Clear
Size: 2 Pack
Special Feature: Insulated
Brand: THERMOS
Unit Count: 4.0 Count
Number of Items: 2
UPC: 041205764397
Manufacturer: THERMOS
Your family will drink their fill from their FUNtainer water bottle. This 4-pack of replacement straws is a convenient way to replace current straws or to swap out a straw for a clean one between washings. The straws are removable and easy to clean. Each pack includes (4) soft silicone straws and (4) hard straw stems.Item Type Name: FUNtainer Replacement Straw
Included Components: replacement straw
Item Weight: 12 Ounces
Size: 2 Pack
Number of Items: 2
Material Type: Silicone
Color: Clear
Other Special Features of the Product: Insulated
Frequently Asked Questions
Is this replacement straw BPA free and food safe?
Yes. The silicone straw is made from food grade materials that are BPA free and designed for repeated contact with water, milk, and juice, so it is safe for daily use by children and adults alike.
Is the soft silicone safer for developing teeth than hard plastic?
Yes. Soft silicone flexes when a toddler bites down, which reduces stress on emerging teeth and tender gums compared to rigid hard plastic straws that can chip enamel or cause discomfort during biting.
Can I tell visually when the straw needs to be replaced for safety?
Yes. The clear, neutral silicone shows bite marks, splits, cloudiness, and stuck on residue clearly, so you can inspect the straw at a glance and swap it out the moment it stops looking clean and intact.
Is the support stem a choking or mouth injury hazard?
No. The hard plastic support stem sits fully inside the lid and never contacts the child's mouth. Only the smooth silicone tip is exposed during sipping, so there are no sharp edges or pinch points to worry about.
Does the straw contain any small parts that could detach?
No. The straw and support stem press fit into the FUNtainer lid and remain firmly seated during normal drinking, so nothing comes loose into the child's mouth during a sip.
Is this safer than washing and reusing old worn out straws?
Yes. Continued use of cracked, cloudy, or bitten straws can harbor bacteria in micro tears that hand washing cannot fully remove, so rotating in a fresh straw on a regular schedule is a safer hygiene practice than stretching one straw for years.
How does this compare to a hard plastic straw from a third party brand?
Third party hard plastic straws often have rough cut edges, poor fit that lets liquid leak past the lid, and questionable material sourcing. The official THERMOS soft silicone version addresses all three concerns in one replacement.
Is this a safer choice than a sippy cup lid transition?
Many pediatric dentists prefer straw drinking over sippy cup spouts for speech and oral development, so keeping the FUNtainer straw working with a fresh replacement can delay or remove the need to transition to a hard spout cup too early.
What if my child is allergic to silicone or latex?
The straws are made of silicone, which is latex free and generally hypoallergenic. If your child has a known silicone sensitivity, consult your pediatrician before use and consider an alternative drinking vessel.
Does the straw release any taste or chemicals into the drink?
No. Food grade silicone is taste and odor neutral and does not leach flavor into water, milk, or juice, so your child drinks the beverage as intended without any plastic or rubber aftertaste.
Is it safe to put these straws in the dishwasher?
Hand washing is recommended to preserve the silicone and ensure a long life. The straw disassembles for thorough hand cleaning, and the clear material lets you confirm there is no residue hiding inside after washing.
Can I microwave the bottle with the straw installed?
Microwaving is not recommended for the straw or the bottle. Heat can warp the silicone and the support stem, which compromises the fit and the safety of the seal, so always remove the straw before warming drinks on the stove or in the microwave.
Is there any fire or heat risk with these straws?
No. The straws are made of soft silicone and hard plastic, both of which are cool to the touch and present no flame, burn, or scalding risk, unlike metal straws that can conduct heat from hot drinks.
Will the straw hold up if my child chews it aggressively?
Soft silicone is more bite friendly than hard plastic, but aggressive chewers will eventually wear through it. That is the safety advantage of a multi pack: replace the chewed straw immediately rather than letting a damaged one stay in service.
Is this straw safe for a baby who is just learning to drink from a straw?
Yes. The soft silicone tip is gentle enough for beginners and the rigid support stem keeps the straw at the right angle inside the lid, which makes the transition from sippy cup to straw drinking easier and safer for new straw users.
How do I know the straws have not been damaged in shipping?
Inspect each straw and support stem on arrival. Look for tears, kinks, or bent stems. If anything looks off, contact the seller for a replacement rather than installing a damaged straw into a child's bottle.
How do I install the replacement straw into my FUNtainer bottle?
Remove the lid, slide the silicone straw onto the hard plastic support stem until it seats fully, then insert the assembled straw and stem into the underside of the lid until you hear or feel a click. The straw should sit straight and flush with no gaps around the seal.
How do I clean the replacement straw thoroughly?
Pull the silicone straw off the support stem, rinse both pieces under warm running water, use a small bottle brush or straw cleaning brush with a drop of dish soap to scrub the inside of the silicone, rinse again, and stand both pieces upright to air dry completely before reassembly.
How often should I replace the straw on a kids water bottle?
Most families replace the straw every two to three months with regular use, or sooner if you see bite marks, splits, cloudiness, or a persistent smell or taste that does not wash out. Rotating a fresh straw from a multi pack on a set schedule keeps the bottle hygienic without any guesswork.
Is this straw compatible with the THERMOS FUNtainer 12 ounce bottle only?
Yes. This replacement straw is custom sized for the THERMOS FUNtainer 12 oz bottle line. It is not designed for the FUNtainer 10 oz, 16 oz, or other THERMOS bottle families, and it will not fit most non THERMOS kids bottles on the market.
Will this straw work with other THERMOS kids bottle models?
No. The FUNtainer 12 oz straw uses a specific length, diameter, and lid geometry that does not match the 10 oz, 16 oz, or stainless steel FUNtainer models. For those bottles, purchase the replacement straw pack designed for the exact model you own.
What is included in the box when I order this product?
Each order includes the selected number of soft silicone straws paired with hard plastic support stems, packed in a single THERMOS branded pack. The bottle itself is not included, and no additional parts or tools are required for installation.
Are these straws dishwasher safe?
Hand washing is strongly recommended to extend the life of the silicone and the seal. The top rack of a dishwasher on a gentle cycle may be acceptable in a pinch, but high heat and harsh detergents can shorten the lifespan of the straw and the support stem over time.
Is the straw material safe for kids with allergies?
The straw is made of food grade silicone that is BPA free, phthalate free, and latex free. It does not contain common allergens like nuts, dairy, or soy, but if your child has a specific material sensitivity, review the full material list on the packaging or contact THERMOS directly before use.
How does a replacement straw differ from a built in straw on a sippy cup or tumbler?
A built in straw is permanently attached to the lid, so when it wears out, gets chewed, or clogs, the entire lid usually has to be replaced. A removable FUNtainer straw lets you swap in a fresh piece in seconds for a fraction of the cost of a new lid or a new bottle, which is the core advantage of this replacement pack.
