Keeps cold drinks cold for days with ice still remaining! Keeps hot drinks hot all day even when sitting in the below zero temps in a cold car while we are sledding/ skiing! Very durable. We did purchase a “bumper” to go on the bottom which helps prevent denting on the bottom when accidentally dropped. Also prevents sliding around on counter surfaces and tipping if bumped. I also love the versatility of having 2 lid tops to choose from. They are both great. No leaks. Easy drinking ability from both tops.

We love our Thermoflasks. We have the 12oz 18oz and 64oz. I debated on sizes for our pre-schooler. We skipped the child marketed 16oz and went right to the 18oz. Don’t regret it! We don’t worry about our 4 year not having enough water throughout the day. They don’t leak!

My favorite water bottle of all time! I unfortunately lost my old one on a trip and pretty much as soon as I realized I had lost it, I ordered one that same day. It arrived less than a week later and all was well again. The best water bottle for the money that keeps your drink ice cold all summer long!

I was using a larger version of this bottle all summer but felt a smaller one would be better for winter. It turns out I was right, this slightly smaller size is great when I need less during the cooler months. I’m sure I’ll go back to the bigger one when the weather heats up again. Both bottles keep my water icy cold for hours.

I used to buy HydroFlask bottles, but once I tried ThermoFlask I would never go back. ThermoFlask is great quality; cheaper; offers you two different tops which is great because I don't like the straw top. Hydroflask would make you buy a different top and it wasn't cheap either. Overall it is a great product!

This 40oz flask is great . I put ice in it and they stayed ice cubes for almost 2 days . Which is awesome . It’s a good looking flask and works great couldn’t be happier . I had a hydro flask also but honestly the Therma Flask I bought from you guys functions better

Overall this is a great water bottle, keeps my water cold for hours and I love the two different lids. I gave it 3 stars because of an inconsistency: One of the major reasons I bought it is because the website says it's dishwasher safe, but when it arrived the bottle said "hand wash only". Which is it???

I'm 96 and my daughter recommended the 18oz for me to keep cold water by my bed. This was if I knock it off my bedside table it wouldn't break. Boy was she right! I can't believe that I had ice in the morning . My daughter got the 32oz in the Lavender. She's supposed to drink a gallon of water daily. She has a blue one takes it the gym. Impressed with these and would consider buying one for hot drinks.

Purchased this for the sole purpose of taking water in the truck. It fits in the cup holder nicely. I fill it from our R/O filter prior to leaving, because I don't like drinking from plastic bottles.

5 Star Review The 18oz size was perfect for my wife. It fits into her bicycle bottle holder and is easy for her to manage while pedaling along with me