One of the common traits of all my favorite pieces of gear is versatility. I like gear that can be used for multiple purposes and activities. Versatile gear gives you more chances to use the item and it can save you some cash since you don’t have to purchase multiple pieces of gear to cover all of the things you want to do. This is especially true with a good backpack that is designed from the ground up to be used in multisport endeavors, which is exactly what Osprey had in mind when they designed the Viper 13 hydration pack.
As the name implies, the Viper 13 features 13-liters of storage, which is an excellent size for day hike, long trail run or a mountain bike ride. The pack weighs just 1 pound, 6 ounces (.62 kg) but features Osprey’s trademark high quality construction which makes it feel like it is tough enough to take any abuse you can throw at it. That is much appreciated when you start putting the Viper through its paces on the trail.