It's time to shift from drinking unhealthy water. Whether you're heading to work, the gym or on the trail. The SHIFT Bottle will take you there. BLU Line Daily Protection. 3 month life of continuous use. Accepts any Series IV replacement filter. 32oz Bottle. Miraguard Antimicrobial Technology suppresses the growth of bacteria, algae, fungus, mold and mildew within the filter media. BPA free, chemical free, and iodine free. Filter made in the USA