Husqvarna Xplorer Backpack 30L. 
The Husqvarna Xplorer Backpack is a comfortable, high-quality bag for all weather. Made from a durable TPU/Ripstop material, this bag keeps your contents dry and is easy to clean. The bag has various compartments to store your things (up to 30L), such as a laptop compartment, and a roll-up seal that can be closed in two ways to keep water out.