Really like this tumbler. Blue is very nice. Will come in handy in my day to day travels.

Terrible choice if you're on the go. It's tricky to line up the threads to screw the lid on straight, but even when you get it on correctly, the drink hole does not stay locked & closed. I drink a ton of water & always keep a spill proof bottle of water in my purse. In fact, I have a dedicated spot in my purse to stand up a water bottle. I was looking for something lightweight with insulated walls so condensation didn't get other stuff in my purse wet. Normally I travel with my laptop in my purse, so keeping things dry is really important to me. The locking part of the lid, the part that closes the hole that you drink from, is designed to snap shut and stay locked to prevent spills. Once locked, it needs a bit of pressure to get it to click open when you want a drink. This worked well for the first week or so, which made me happy. But then it didn't, which made me unhappy. I was out of town when I refilled it and carefully screwed the lid on. Then I took a swig of water, snapped the drink hole shut, and slid it into my purse like I always do. About 15 minutes later I pulled the tumbler out of my purse and it was empty... And everything in my purse was soaked: my phone, key fob, my meds, a book, my wallet and everything in it, a pack of gum, a printed itinerary with driving directions... Completely saturated with 20+ ounces of water. And I was completely unhappy. Thankfully I had been using my laptop so it didn't get wet, but now I didn't have a place to put it away. BTW, I had to buy a new purse so I had SOMETHING to hold my gear while the wet purse air dried in my hotel room throughout the rest of my stay. (And rice for my phone & key fob.) The best I figure, the drink hole popped open when I set my purse down between me and the person I was sitting next to on a bench, then she scooched closer to me to make room for a 3rd person. And honestly, that should not be enough of a thing to snap open a spill proof drink container. I gave it one star because it's insulated - not enough to keep your drink cold, but enough to prevent condensation. The 2nd star is that the lid is comfortable to drink from. It's curved where your lower lip touches it, which is nice. If you're using it at a desk where it's not going to get bumped, go for it. But if you're planning on putting it in a purse or backpack, find a better container. This is not the one you're looking for.