Capacity 12oz 04l just the right bite combining the patented camelbak big bite valve with a stem tube and shut off valve detachable one piece component is simple for kids to use and simple for parents to clean no tipping required just flip open the bite valve and sip easy to for small children to operate and carry spill proof bite valve simplified stem and straw are child safe yet easy to remove for cleaning bottle material is durable with high strength bpa free eastman tritan co