Perfect Fit 2.0 Version ONLYSpecially designed for Quencher H2.0 FlowState Tumbler 40 oz & 30 oz. (ONLY COMPATIBLE WITH 2.0 VERSION OF CUP!!! If your cup is version 1.0, the round leak stopper will come off due to improper size and cause leakage!! Please check your cup version before purchasing). A Must-Have for CupAre you still worried that the tumbler will leak and stain your clothes, desk or backpack? Let our spill proof stopper set solve everything for you! Including 2 straw covers, 2 square leak stoppers, and 2 round leak stoppers. Effectively preventing splashing and dust. All-Round Spill ProofThe straw tips cover can prevent beverages from spill from the straw and dirt from entering, keeping the straw clean; The square straw plug can form a seal and secure the straw; The round leak proof plug with an open design is used to improve sealing and ensure that air can enter when drinking. High Quality MaterialMade of safe food grade silicone, BPA-free, durable and reusable, eco-friendly and non-toxic. Can be used for a long time without deformation. Good heat resistance and sealing performance. Easy to Install & CleanOur Spill Proof Stoppers is compact and lightweight, easy to install and portable, making it perfect for outdoor activities. Hand washable and dishwasher safe. A thoughtful gift for family and friends.