The 28oz Seychelle Water Filtration Flip Top Bottle is the modern day answer to clean, great-tasting drinking water for the active lifestyle. It was designed with the consumer in mind in that you drink water from it at a 45 degree angle below your mouth thus avoiding waste and spilling! It comes with an attractive insulator sleeve, which can attach to a belt or backpack, and is ideal for the outdoors: walking, hiking, biking, travel, camping or emergency preparedness! The bottle is filled from the top and produces up to 100 gallons of great-tasting water filtered water equal to or better than bottled water. It is our best selling water filtration bottle.