A sleek, urban-inspired backpack Thule Subterra 23L backpack is a sleek laptop backpack perfect for organizing your electronics and other items. The backpack protects your tablet in a soft-lined pocket and your 15" MacBook Pro® or 15.6" PC in the padded laptop sleeve. Another smart feature is the PowerPocket, a compartment which organizes your cords and even lets you conveniently charge your phone on the go. For longer trips, the backpack attaches to rolling luggage and the padded back panel and breathable shoulder straps ensures a comfortable to carry. The Thule Subterra 23L laptop backpack is a stylish, feature-rich backpack that you will appreciate on all your travels to come. Features Protects your laptop up to 14" in the padded laptop sleeve with SafeEdge construction Protect your tablet in the dedicated storage pocket with soft, interior lining Cords are neatly managed between your device and your mobile charger in the internal PowerPocket Carry comfortably with breathable perforated EVA shoulder straps with mesh covering and padded back panel Stabilize backpack straps and increase comfort with adjustable, removable sternum strap Make traveling easier by securely attaching to rolling luggage using the pass-through panel Padded interior pocket protects your phone, sunglasses or other valuables Convenient organization pockets help you easily locate smaller items Securely keep small items and a water bottle within reach in the expandable, zippered side pocket Tested to the limit At the Thule Test Center™ in Hillerstorp, Sweden, products go through extreme testing. Thule's roof rack systems are designed to carry your gear and fit your car as safely and securely as possible. Below are just a few examples of the many tests conducted.