The new S3 O2Run backpack provides everything you need for your sports activitiesand adventures. Its swaddle design added to its One-click® lock system offers all the integration to the body with total freedom of movement and safety of the whole set. Its lightness (290gr), technical manufacturing materials and details such as the extra hydration (NEW 1,5L !!!!) make it the best ally for your careers, training and extreme activities. Features: • "ONE CLICK" quick lock system. • Interior tool and mobile pockets. • Breathable and ergonomic. • Capacity of 8L + NEW hydration bag and 1,5L. • Quick access zippers