Made with our Black Hole duffel fabric, this shoulder bag is highly water resistant, super durable, and designed to carry your laptop and other gear on daily commutes or longer trips holds most 17 laptops. This is a courier's bag, designed for getting wet, thrown about, overstuffed and dropped by the front door at the end of the day. Featuring waterproof fabric and a water resistant construction and zippers, our Black Hole Messenger protects your gear from rain, rough handling and miles of abuse. A roomy main compartment holds books, papers, running shoes and a lunch it also has an internal, padded laptop sleeve that accommodates most 17 inch laptops, two mesh pockets to keep little items handy, a key keeper, and an organization panel that holds your pens, zip drives and a phone. The flap features an outer pocket that seals with a water shedding zipper, two daisy chains to hold your bike lock, and an LED attachment loop. Designed for a vertical fit while you're riding, the shoulder straps switch between right or left carry and feature a single handed, quick adjustment for a precise fit. A padded back panel softens the loads. With a topside carrying handle, reflective material for visibility at night and lash straps to hold a yoga pad. Made from 14.7 oz 1,200 denier polyester 50% solution dyed with a TPU film laminate and a DWR durable water repellent finish.