Bests & Worsts Reviews from Amazon

I hate to do this because this is truly my all time favorite coffee cup. It never leaks, it keeps hot for hours, it’s durable....except for this one very important part. I bough the first one from a brick and mortar store. After a few weeks the button popped off, exposing the spring. It appears to be press fit. I glued it back on and it worked for about a week before it pulled free again. However, I loved the design and function so much that I ordered another from amazon. Same problem in less than two weeks. These pics are of my replacement from amazon and this 3rd mug is approximately 3 months old. Same exact failure point. Stanley needs to address this issue before it becomes such a common problem that it tanks this product. Again, MY FAVORITE MUG! But this flaw is awful. All 3 times it’s failed, the mug has been upright on a table or in my hand. Had it happened in my soft lunch bag, or in my backpack full of spare work clothes for winter, things would have really sucked. PLEASE FIX IT!