Tumbler Replacement Lid & Metal Straw Kit

The piece on top (the slider piece) keeps falling off.

That the same lid that comes with the cap

My last lid cracked, and I love my 20 Oz. tumbler so much that I went in search of a replacement and found it on Siesta's website. I love this lid so much! Unlike the original lid, the slide is tight, and has a silicone pad that when closed, is virtually leakproof. The lid itself fits snugly inside my tumbler, with a high quality rubber gasket, so it's secure. Though it's not advertised as such, I even flipped my full tumbler upside down and got no leaks! This is a high quality replacement that I'm very satisfied with.