6pcs/set Silicone Spill Proof Stopper Compatible For Stanley Cup 1.0/2.0 40oz/ 30oz Tumbler Water Cup Anti Leakage Accessories

Includ Component - These spill proof accessories including 2 straw cover sets, 2 round Leak stoppers and 2 square spill stoppers. Easy to Install - Our stanley cup stopper is very easy to install. ust put it on top of your tumbler lid and gently rotate the straw to slowly insert. It will fit snugly and securely