Contigo® Shake & Go Fit Thermalock Vacuum-Insulated Stainless Steel Shaker Bottle, 24 oz., Grey/Black

I have had mine for over 18 months and love it! Yes, it did leak the first time I tried it, but after careful inspection I realized that it was operator error. The top cap is on a flexable swing-arm and if you are not paying attention you can cross-thread it and it will leak. make sure that the swing-arm is flush with the main lid before shaking!!! As for the top cap not having threads, well thats from the container being dropped on its top, which will break off the threads. Mine (full of coffee) was knocked off of the hood of a work truck landing on the top cracking the handle and breaking off one of the 2 threads for the cap. That was over 2 months ago (mid Nov 2019) and I still use it without it leaking.

Im not sure what shaker the other reviews have. I just purchased my bottle April 18, 2019. Mine DOES NOT LEAK, and I have it laying in my purse and travel bag among others. Its durable and sturdy. If other buyers are ripping the threads in the top up by not properly putting it on, this will cause a leak. It took me several shakers to figure that out. Take your time screwing tops on properly. Thanks for not so favorable reviews because I got mine fir $7.00! I love it!!! I can double up meal replacements with the 20 once bottle I have. Love that its stainless steel, and the screw on top. Potential buyers do not let reviews steer you away. Try it for yourself first.