Each bottle comes with a starter filter which is equivalent to 300 single serve bottles. For best results you should change your Bobble Filter after 2 months or 40 gallons/150 litres.
Bobble Filters use an activated carbon system that requires little maintenance and is a powerful chemical absorbent. Chlorine, impurities and organic contaminants are filtered out, so each sip you take is water, but water improved.
Filter for use with Bobble only.