Anti-spill Design: The jug cap adopts an anti-spill design with strong sealing, which ensures that the water in the jugs will not splash, leak or spill, while preventing dust from entering, keeping the water clean and sterile.Reusable: You can recycle and reuse the water jug cap thousands of times, which can save you a lot of money. Say goodbye to one-time-use water caps, save the environment and reduce plastic waste.Widely Used: Fits any jug with a standard 55mm opening, including 5-gallon and 3-gallon jugs, and even fits screw top bottle. Easy to install and remove, just press the top to install and pry open to remove.Safety and Environmental Friendly: Our water jug caps are made of food grade silicone, which is healthy and environmentally friendly, odorless, soft and elastic, ensuring that drinking water can stay pure and fresh for a long time, and is very suitable for use in water jugs at home or in the office.