Essential Spill Stopper: Designed specifically for 30/40 oz stanleytumblers to prevent liquid spillage or tipping Whether you are traveling, participating in outdoor activities, or in daily life, you can use it to bid farewell to messy spills.
Silicone Spill Proof Stopper Set: Stanleycup spill stopper is made from premium food-grade silicone, BPA free, dustproof and leak proof, durable and reusable, safe for use in dishwashers and disinfectors.
Only for Version 1.0: The set Including 2 straw cover cap, 2 square spill stopper and 2 round lid leak stopper, compatible with stanley tumbler 1.0 40oz & 30oz only.
2 Pcs Straw Covers Cap: Suitable for 0.4 "wide straws, prevents water from leaking through the straws and prevents debris and dust from entering.
2 Pcs Square Spill Stopper: Used to fit in the suction hole of the lid to form a seal and hold the suction pipe.
2 Pcs Round seal plug: installed in the middle of the inside of the lid to seal and prevent air from entering, making drinking water more smooth.