(2) 10oz/.3L Bottles Included * Weight 6oz/170g * Small zippered I.D/key pocket * External binding made of soft, durable stretch fabric to provide extreme flexibility while preventing skin irritation 3D AirMesh body panel for optimal breathability * Bottle-lock bungee system keeps 10oz water bottles in place ? especially handy during transport Dual adjusting waist belt with quick-release buckle Strap Secure webbing control Reflective logo