Flip-top cap for plastic bottles. This cap easily opens and closes plastic bottles, making it convenient for running, walking, mountain climbing, hiking, etc. Simply replace your existing bottle cap. Two red ones. Unused. Please remove the plastic lock before use. Photos 6-7 are the items for sale. They are red. Photos 1-5 are for illustration purposes only. The colors in photos 2-5 are different from the items being sent.