Aquamira Frontier Straw Filter Platic Made in the USA Emergency water filter System for hiking, camping, and emergency situation Effective on protozoan cysts Economical - 1 System filters up to 20 gal. (75L) of water BLU Line Parasite Filter with up to 450 ml/minute flow rate and Certified filtration for 30 gallons (over 110 L) Filter made in the USA and Certified lead-free (NSF/ANSI-372) Lightweight and compact 1 oz. portable protection Miraguard Antimicrobial Technology suppresses the growth of bacteria, algae, fungus, mold and mildew within the filter media Does not contain BPA, chemicals, or iodine