No more trips to the supermarket for bottled water. Its cost effective - you simply use tap water and the Water Bobble does the rest. Water Bobble is a revolutionary product that takes care of the planet and keeps your body hydrated. Bobble is BPA free and made from recycled PET (RPET) and is 100% recyclable. Bobbles carbon based filter removes organic contaminants from regular municipal tap water and meets or exceeds NSF international standard 42 for chlorine, taste and odour reduction. For best results bobble recommend changing your filter after 2 months or 40 gallons/150 litres. The Bobble Water Bottle is a stylish, reusable water bottle that filters water as you drink through the use of a remarkable replaceable carbon filter. As water passes through this filter, the carbon removes chlorine and organic contaminants making your tap water your only source needed. Every filter is equal to 300 single-serve bottles, and is BPA, Phthalates and PVC free.