[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. Feel free to contact us if you have any questions 6 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