Our Spill Stopper has been upgraded to keep your for tumbler from spilling if it is tipped over. Using our Silicone Spill Stopper can effectively solve the problem of for overflow. The Spill Stopper Set works perfectly with the for Quencher H2. 0 Flowstate Glass 30oz/40oz. The straw tip cap prevents water from spilling out of the straw and keeps crumbs and dust out through the straw. The silicone leak-proof set is made of high-quality food-grade silicone, reusable, , and environmentally friendly. Please Note: Not Compatible with Version 1.0. Since the for 2.0 leak-proof set will leak when installed in Version 1.0, please confirm your for version before purchasing. Package comes in a total of 18 pieces, including 6 straw lids (dustproof), 6 square spill stoppers (hold straws), and 6 round spill stoppers (easy drinking). Let these spill-stop fittings be leak-proof, easy to install, and create a seal, let them help you with your for leaks! Colour:Transparent-White Material:Silica gel Package Contents: 6 * straw cover cap 6 * square spill stopper 6 * round leak stopper Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.