Will the Osprey Daylite Plus Backpack wave blue from Osprey be your new backpack? One of the most important features of a backpack is the content, this determines how much you can take with you in your new backpack. This Osprey Daylite has a capacity of 20 liters. The question is whether this is enough to take everything with you in your backpack. Make this bag easily waterproof with an Osprey rain cover (note not included). This backpack has a warranty of no less than 30 years.