UVBrite by Trutemp. UVBrite bottles use ultraviolet (UV) light for water sterilization. UV sterilization, which is also known as UV disinfection or ultraviolet germicidal irradiation (UVGI), works by breaking certain chemical bonds and altering the structure of DNA, RNA, and proteins effectively destroying all microorganisms. Ideal for hiking, traveling, office, fitness, camping, or anywhere you want the ability to have purified water. Kills Viruses Kills Bacteria Kills Pathogens 50 Toiletries Per Charge IPX7 Waterproof 1 Year Limited Warranty 99.99% Germ Free Water UV Self-Cleaning Water Purification Insulated 18.6 oz (550 ml)