Are they thermo-resistant ? Will they shatter when I boil them or warm them in a bottle warmer?
286687
I have regularly boiled Evenflo bottles to sterilize them. I put clean bottles in a pan of warm water on the stove and let the temperature increase slowly. I would not plunge room-temperature bottles into boiling water. I do not know if this is the recommended procedure, but I did not crack any bottles during the years that I was sterilizing them in this manner.
1026074
Not sure about that. We had trouble with them (4oz)cracking in the bottle warmer so we started using mason jelly jars and they work GREAT ! NO cracking and a lot cheaper.
1972040
I don't know. I don't use bottle warmers but these are convenient because they are microwave safe.
658742
The material seems to be either plastic or nylon. They may not hold up in boiling water.
1173135
Yes they can be warmed in a warmer. I can not recall the brand of warmer my daughter uses... Put these bottles will last a life time and no harmful chemicals from plastics. You will love them!
2265347
Happy to answer your questions, Steve. I use them in the freezer all the time but don't drop them! They'll break pretty easily if frozen (especially when filled up with frozen goodies). You didn't ask but I'll offer that I'm very careful when heating something up with these in the microwave. Defrosting, yes; warming, sure; getting something pretty darn hot? I've done it successfully and nothing's melted yet, but I'm cautious.
1961795
These are made of glass. They are not plastic, therefore melting would be highly improbable. Keep in mind that they are made of a thin glass that is very fragile. Hand washing them will help to keep them safe from any unexpected flying utensils that they may come into contact with inside of a dishwasher.
2043453
No melting at all... They are individually wrapped. They are very delicious
2040612
I have made tea in them- but I normally let the water cool for about 4-5 minutes before I pour into the pitchers. They are very think glass and very sturdy, they may be able to handle boiling water, but I haven't risked it.
1886256
I'm not certain. I do know that it wasn't heat resistant. When I poured hot mix into the mold it changed shape. This could have been my mistake certainly. I only tried them once.
1453285
I have never put them in the microwave. If I want the coffee hotter I just run hot water in the cup first. Yes, they are fragile but I love them and just order more if I break one.
774605
I haven't tried to put them in the freezer, but I have used them in the microwave and then put icy cold liquids in with no problems. They aren't made of pyrex, but they seem pretty durable.
1455841
No. They are a very thick & sturdy nylon (I think) plastic. But definitely plastic. And definitely super strong & sturdy. They don't conduct or retain heat, so no worries of it getting too hot to handle like metal would. Even though they're plastic, because of its composition and/or thickness, mine haven't melted or warped at all.
138893
I have had them in hot water 90 degrees to 100 degrees and they have been fine, trying to keep frosting and honey more squeezable. Hope that helps you!
1277909
They are not insulated. I only use them for cold beverages. I don't think I would put anything hot in them.
1664951
Just like a normal mason jar, these little guys definitely withstand the heat. but I would definitely not microwave the lid. And make sure to use tongs or a pot holder when removing from the microwave. They glass gets super hot.
458366
Yes you can use them for hot liquids, however, I would avoid extreme temperature changes because they are glass and they will break.