Ortlieb Bike Box 2 Rack Bag

This is a compact waterproof rack top box that is designed for use on full suspended bikes with seat post mounted racks or racks without lateral supporters and is ideal for short day trips.
It is made of lightweight polycarbonate with a lockable waterproof zipper, includes the rack adapter, which allows fast mounting and removal of the box and may be mounted on the left or the right side of a standard rack.
It has two variable Velcro elements for subdividing the main compartment, two zipper pockets, a compartment for mobile phone and a pen holder.
It also has a small padlock to lock the two way zipper, removable shoulder strap and carrying handle.