Great Idea for
Stanley Cup - Do you hate that your straw is uncovered and that it
spills? Our spill proof set is the perfect solution.
Adjustable Design - The spill proof stopper compatible with both 1.0
and 2.0 Stanley 40oz & 30oz tumbler, so you don't need to concerned
about the size not fitting multiple versions.
Spill Proof - Just use our spill stopper set, witch includes straw
cover caps and lid seals, and your tumbler will no more leaks!