RED Line Virus Filter with up to 500 ml/minute flow rate. Certified filtration for 120 gallons (over 450 L). Lightweight and compact for easy packing and reduced burden during activity. Customizable to accept any Series IV cartridge. Connects to reservoirs, gravity, and DIY systems via UQC quick connects. Fits all Geigerrig hydration engines for pressure-assisted filtration on the trail. Miraguard Antimicrobial Technology suppresses the growth of bacteria, algae, fungus, mold and mildew within the filter media. Certified lead free (NSF/ANSI-372). BPA free, chemical free, and iodine free. Boxed with hanging tab.