Features Enter your model number to make sure this fits. Airflow molded EVA back panel Custom anodised aluminium harware Premium ?seat belt' nylon webbing Adjustable sternum strap Internal laptop sleeve Description Product Description You don't necessarily need to be carrying everything but the kitchen sink when you're riding your bike down the street to grab a cup of coffee and do some reading. With a simple, streamlined design, the Alchemy Equipment 20 Litre Roll Top Daypack will carry all the necessities, while maintaining a low profile as you ride. Its design borrows elements from classic bicycle panniers, giving it a cavernous main compartment that is secured by a roll-top closure and a 15in laptop/tablet sleeve located inside the main compartment, adding a degree of organization, so everything isn't rolling around in there. The pack remains comfortable through the Airflow molded EVA back panel and an adjustable sternum strap that keeps the pack close and comfortable.