Topeak MTX Trunk Bag DX

With this deluxe bag you can carry 800 cubic inches of stuff, release and slide it off the mounting rail of your MTX rack and throw the included padded strap over your shoulder. The padded, insulated walls of this bag make it a great camera case or cooler (Topeak boasts that it can carry eight 16-oz cans!). The already-large main compartment expands for that extra cargo. Additional features include:

• High-quality 2,520-denier pack fabric; coated with Dupont Teflon fabric protector.
• Extra-thick and rigid foam sides on top and bottom
• 3M reflective strip for safety
• Built-in carrying handle
• Detachable shoulder strap
• Compatible with Quick Clip mount for QR Beam Rack MTX
• Weight: 3 lb 1 oz
• Dimensions: 32 x 16.5 x 23-33 cm (expandable)
• Volume: 800 cu. in. (expandable).
• Pack Fabric: 2520-denier & 840-denier nylon fabric