... bpa free material 4,various colors availab our water bottle lid: How to clean a cap? 1) ... vinegar inside, add warm water until the bottle is 1/2 full. Push a bottle brush through the mouth of ... Wipe down the outside of the bottle with vinegar; then, rinse under water. 4) Wash the cap with ... beach, we needed the strongest, lightest stainless steel water bottle we could get. So did all our friends. Now ...