The 5 Gallon Water Jug Cap is a durable and convenient lid designed specifically for 55mm water bottles. Made by CAP, this bottle cap features a hole for easy filling and emptying of your water jug. The blue color adds a touch of style to your water bottle while the set includes everything you need for your hydration needs on the go. Perfect for camping, hiking, or any outdoor activity, this water jug cap is a practical and essential accessory for staying hydrated.