Raymall 8pcs Spill Proof Stoppers for Stanley Cup 40oz/30oz, Silicone Spill Stopper for H2.0 Stanley Cup 30oz With 2 Clear Straw Topper, 2 Cute Flower Straw Cover Caps

This product made my Stanley not leak at all! It comes very handy just the straw topper made my straw collect chapstick in it. You cannot see the stoppers except for the topped so it is very good! They work well and so cute.

The pink flower was an adorable addition to my daughter’s Stanley. It has been knocked over and tipped in her bag several times with no leaks so far. I am able to hold the cup upside down and still nothing comes out.

Cute! Easy to clean, great quality with no leaks.

I carry my Stanley in my tote bag going into the office so my hands are free and this little set works perfectly to prevent leaks. I realized once in the beginning that my cup had leaked all inside my tote and onto my jacket. This little set is completely silicone, clear-ish white, and when my cup gets tilted sideways or when water is sloshing around from being carried it doesn't leak at all. Now as I'm taking these pics I held the cup angled upside down and fluid was coming down the straw in a slow drip. My cup never goes fully lateral so that's not a big problem for me. This set works perfectly for when Stan is in my tote in the passenger seat and I'm walking with it. No spills!! I love it.

I love how it looks