Collegiate Summit Vattenflaska med sugrörslock

The double-walled insulation actually works—I left it in my car for a few hours and the water was still icy cold when I grabbed it. The straw lid is sturdy too, no leaks even when I toss it in my bag.

I was a little skeptical about the straw lid staying leak-free in my bag, but it seals perfectly and the vacuum insulation keeps my water ice-cold during a whole afternoon of classes. Really glad I chose this for game days.

The straw lid is a nice touch—it makes sipping during class way easier than unscrewing a cap. Keeps my water cold through a full afternoon of lectures, though I wish the lid sealed a bit tighter when tossed in my bag. Still, it does the job for everyday use.