This is a set of two green "manner caps" for dog walks. They can be attached to empty plastic bottles. Previously, I used one-touch caps on plastic bottles, but the opening was too large and the water came out too quickly, making it difficult to use. This cap allows the water to come out like a shower, making it comfortable to use. It has a strap hook, so I attach a strap to make it easier to carry. Dog shower bottle cap Set of 2 Green #DogPee #DogWalk #DogManners #GoingOutMannerCap #WalkMannerCap