Advanced Filter Technology - Beautifully Designed Incorporates sleek design, an innovative mechanism and the advanced G3+TM filtration technology. Built with 18/8 Stainless Steel so it's stylish enough for the office and rugged enough for the outdoors. Comes with the G3+TM Filter, which is effective against many metals and chemicals common in tap water, and removes 99.99% of bacteria. Purifier sold separately. Drink FreelyTM Features: · Innovative fill, press, drink mechanism filters great tasting water, fast and easy without sucking, squeezing or waiting. · G3+ Filtration Technology - three advanced filtration technologies in one · Fast flow rate - 16oz (500ml) in 15 seconds · Replaceable G3+ Filter lasts 300 uses (40gal - 150L) · Materials - 18/8 Stainless Steel and food-grade silicone are extremely durable · Fits in a car cup holder · Sealing flip lid · Drink through the flip lid, guzzle without a lid, or seal cup for later. · Tested according to NSF/ANSI 42 and 53 G3+ Filtration Technology: Three levels of protection · G1 - Triple charged ion mesh captures germs (bacteria) while allowing water to flow through fast · G2 - Ultra-powdered activated carbon (natural coconut) filters odor and flavor, many industrial and pharmaceutical chemicals, and many heavy metals. · G3 - GRAYL's antimicrobial agent keeps the filter fresh between uses Specs: · Liquid Capacity: 16oz (500ml) per use · Dimensions: 9.1in tall (23 cm) - 2.8 in diameter (7cm) · Flow Rate: 16oz (500ml) per 16 seconds (2 liters/minute) · Weight: 19.6oz (556 grams) · Lifespan: 40 gallons (150 liters)