We've used this refill a few times on the same thermos. The silicon is of a good quality. This one has a much nicer coupilng joint design. Unfortunately, the mouth part breaks and splits more quickly than we'd like, but that's more an issue of the thermos cap design (a closure tab pushes down on the mouth piece to prevent water outflow) than the silicon straw itself.
Verified purchase: Yes | Condition: New
and they workjust fineon all sizes of this sy yle funtainer ( make sure yoy look at the pictures...
Verified purchase: Yes | Condition: New
great straw, it fits perfect and easy to clean
Verified purchase: Yes | Condition: New
Product is exactly what I needed, and was half the cost I was finding anywhere else. Perfect replacement for older style funtainer which have become incredibly difficult to find parts for.
Verified purchase: Yes | Condition: New
Just what I needed. My kid continually chews up the straw on his thermos cup. This fit perfect and my cup is back in business.
Verified purchase: Yes | Condition: New
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