2-year replacement service： If the cap is damaged or tear within 2 years, it can be replaced with new one, You can contact us by opening an Amazon order and finding the 'Contact Seller' button. You don't need to send the old back, contact us to directly sent you a new one! Made of 100％ food grade silicone BPA Free, Sturdy & Durable. High temperature resistant, Dishwasher safe. Shrinking the bottom design can better wrap around the bottle mouth and prevent water leakage.Fits for 3-5 gallon water jug with 1.89 to 2.16in opening , The caps are flexible and pretty tight, sealed perfectly. Easy to use and install.In order to facilitate the disassembly of the water bottle cap, we have designed two "small ears" that allow you to easily grip the edge of the cap.You can take off our caps with your finger easily. Reusable water jug caps.Stop use one time plastic caps, which can save a lot of money. Great solution for indoor and outdoor water store, water dispenser caps, water jug caps for refill. Myvision Reusable 3-5 Gallon Water Jug Caps, Secure Cap for Water Dispenser Cap ,No Spill Silicone Replacement Cap,Suitable for bottle mouths with diameters ranging from 1.89 to 2.16 inches