Removes Microplastics, Bacteria and Parasites. Reusable and Long Lasting: the filter lasts up to 1,000 liters – over a year of daily use. Premium Materials and Includes Carry Case. Compact and Portable: slim and lightweight (less than 3 ounces), the filter straw and included carry case easily fits into your bag, making it a must-have travel companion. User-Friendly: no batteries or electrical outlets required; simply sip through the straw, and let the filter work its magic.