The Octane Dart Hydration Pack from Camel Bak features a minimalist design & ultra lightweight yet durable fabrics. It is a great option for easy hydration while on the move with a 1.5L capacity for water & a convenient 0.5L for storing other essentials. The Crux bladder features a standard exit port that has an on/off lever making it easier to prevent leaks & a tube trap on the front of the harness holds your bite valve in place between sips. Simple, intuitive & able to hold everything you need on the go.