Review on Tomnk 9pcs Collapsible Water Bottles: Reusable Canteen Bags with Clip for Sports, Biking, Hiking & Travel - 9 Colors by Christopher Shah

I haven't had a single leak problem. I haven't got it to this day. I've had them for about two and a half months now and use them all the time. As long as you screw the lid on tightly, they won't leak. If you are stupid and don't tighten the cap all the way, they will leak. And don't write a bad review because the delivery wasn't on time, some of our reviews I saw about this product. This product works great for me, it still works to this day and I use it daily. Just screw the lid on and you won't have any problems.