For a better quality bottle to get you through your outdoor adventures, an emergency, or just the day, try the NEW Yellow / Green Wide Mouth 1 Liter Water Bottle. These new bottles are made from Tritan™ Plastic, giving you incredible durability while staying BPA free! They each include gradations to measure intake or to use for mixing drinks right inside the bottle itself. This bottle is extremely durable with no leaching detected. Comparable to Nalgene and Camelback water bottles.