[Safe silicone material] Made of 100% food-grade silicone, it can effectively keep the water pure and fresh for a long time, healthy and environmental protection, and create a sterile environment for water storage. Suitable for any 3-5 gallon water bottle with a standard opening of 55 mm /2.16 inches, also suitable for screw cap bottles. The lid can be reused many times and is easy to clean. [No leakage cover] : strong sealing, prevent overflow. You can position the water bottle at any Angle you like. [Improved water bottle cap] : The improved ring is added, which is convenient to keep after removing the cap and prevent the cap pollution. With the support point, you can install or remove the cover in seconds. pollution. With the support point, you can install or remove the cover in seconds. 4 Pcs） 3 & 5 Gallon Water Jug Cap for 55mm Standard/Screw/Crown Tops Water Bottle,Non-Spill & Leak Free ,Reusable Food Grade Silicone Replacement Cap