This bag has been tested during a running session on Lake Annecy between Talloires and Menthon.

Advantages of the Viper 9 Osprey bag

A pure bag for active sports activities such as cycling, trail running or running.

The bag is sold with a 2.5 litre water pouch and hydration hose with bite valve and includes a specific compartment for the pouch.

The tip of the water bag is clipped with an emanated clip so that the hydration hose does not wander around and is properly secured without disturbing the athlete. Important for this type of activity

Ventilated back that wicks away perspiration

Ventral and pectoral compression strap for a good holding of the bag

Storage organizer for the cycling activity.

Key clips so you don't lose them when you open the pocket.

Helmet holder on the top of the backpack very practical and easy to clip on.

Summary :

The Viper 9 from Osprey is a pure bike bag but can be converted for running and fast walking. It includes a water pocket with compartment. This bag is compartmentalized and especially for spare accessories for the bike (inner tube, keys ...).