Dafi Filtering Water Bottle 24 fl oz, 2 Pack Filters and New Bottle Cap Blue BPA-Free. You can enjoy with fresh and clean water, wherever and whenever. Stay hydrated! Dafi Bottle is equipped with unique monthly changeable carbon filter entirely made of coconut husks. It removes the unpleasant taste and odor of chlorine from tap water. The amount of minerals (mainly magnesium and calcium) remains the same and allows water to maintain essential elements for our health. Slightly increases pH resulting in higher quality of water. REMEMBER, run each filter for about 15 seconds under water before using it.