A compact, expandable backpack designed for your daily bike and non-bike commute. To ensure maximum comfort while cycling, the shape of the shoulder strap and the placement of the chest strap adapt to your natural cycling position. The 18L capacity is perfect for your daily commute. However, if necessary, you can unzip the side panels and expand the volume of the backpack by 50%. The roll-up top and water-resistant finish keep your belongings dry while riding in the rain. Designed for bike commuters, the Thule Paramount Commuter is a must-have for everyday life on two wheels. The roll-top and durable, coated materials provide reliable protection from the elements. Easy access to your phone while driving thanks to a dedicated pocket. The floating laptop compartment can be comfortably carried in a backpack on your back while maintaining a natural riding position. Fits laptops up to 16". By unzipping the sides, it is possible to increase the volume by up to 50%, transforming a compact backpack into a large-volume backpack for the city. Reflective elements visible from all angles provide visibility on the road even in low light. Ample storage space is ideal for storing a variety of essentials for bike commuters, including a change of clothes, jacket, snacks, or groceries for the outbound and return journey. The large side pocket can be used to safely store a water bottle or thermos while riding or walking. The outer pockets can store a lock for your bike and personal belongings so that they are easily accessible without searching deep in your backpack. The shape of the shoulder strap and the position of the chest strap increase stability, safety, comfort and practicality while riding without the need for a waist belt. The ventilated back panel and shoulder straps provide comfort even on hot days. If you are not riding a bike, you can attach the helmet to the outside of the backpack. Weight: 1.1 kg Warranty: 2 yearsColor: khaki Pattern: logo Fastening: Velcro, zipper Storage: main pocket, inside pocket, outside pocket, organizer, side pocket, laptop pocket Laptop pocket: 15" diagonal, 16" diagonal Volume: 18 l Dimensions: 53 cm x 30 cm x 24 cm A4 format: fits Specifications: reflective elements, back ventilation Material properties: waterproof Material Type: Synthetic Material: 100% nylon