According to Military 1st, the Maxpedition Testudo Laptop Shoulder Bag is still in stock at their online store... "The Maxpedition Testudo is a tactical shoulder bag created for your 17" laptop, with padded laptop protection and checkpoint-friendly designs for seamless travel.
It features a main compartment with adjustable interior security straps and an internal Loop field for attaching Maxpedition hook-and-loop accessories.