Just stepped up to the 24 ounce size. Originally bought a 14 ounce at a retail store. Liked it a lot, but felt it was not big enough. I ordered the larger size online, and only then found out that the 14 oz was the kiddie size. No wonder it wasn't big enough...after all I am an adult! Fits nicely in my car cupholder.
I really like having a straw, especially when driving since I don't have to take my eyes off the road when taking a sip. Some reviews have indicated that there is trouble with the straw not working. Helpful hint...be sure that you flip the mouth piece ALL THE WAY BACK (AS FAR AS IT WILL GO). This will take it just a few degrees past vertical, which is essential for it to function properly.
I was excited to have this straw lid so that I could use it while driving. Tipping the bottle to sip blocked my view so adding a straw made things much easier. Sadly, the straw kid is not leak proof so I am unable to toss the bottle in my bag or lay it down while using the straw lid.
I bought this bottle about a year ago and have used it almost daily. It was great until maybe a month ago when it started to leak. I would leave the bottle on my desk and water would pool to the top. I'm not sure how or why this is happening, but it is leaving a wet mess anywhere I set it down. Time for a replacement, but just not sure I will be getting another one of these again.
I've owned a number of bottles in the past but NONE of them can do what the Takeya can. It hold its contents at a lower temperature longer than any other I've found. Even when I had a problem with the bottle I purchased, the Customer Service representative I talked to went "above and beyond" to not only solve the problem but made sure I was completely satisfied. It really IS a great product, from a great company.
These bottles are awesome! They keep my water cold for almost all day. I actually drink more water refilling this bottle than I did with any large bottle. I also love the straw top!