Add a Replacement package of (2) Filters that will easily adapt to either your 16 or 27 oz Back To The Tap sports bottle, and you can enjoy up to 9 months of great tasting water that offers an affordable, convenient, and pure tasting water experience, while conserving up to 900 bottles of plastic waste from further contaminating our planet! Best of all.....at an average 4 cents per refill, it makes both environmental and financial sense to have your entire family changing their drinking habits by going: BACK TO THE TAP FOR A HEALTHIER PLANET

*** Tested and certified by NSF International for ANSI/NSF
Standard # 42 Aesthetic Effects
Chlorine Reduction - Class 1
Tested by independent laboratory for Lead Reduction averaging 97% US Patents No. 5,609,759, 6, 165,362
MADE IN THE USA