The Rear Tunnel Bag is good for carrying some of those items that you would normally carry in your backpack. Transferring some of that weight to the tunnel provides better weight positioning for a snowbike. It can also aid in lightening up your Avalanche-Pack.
The bag has 1 large pocket with a removable divider inside and a shovel pouch holder with an independent shovel handle holder on the right side. The bag is made of rubberized materials and has a rigid frame inside so that it keeps its shape with heavier items stored inside. It has a soft shell zipper lid on top so that it can bulge when overloaded. It also has a fold over flap that covers the entire top of the bag to keep it clean from wet snow.
The bag mounts to the tunnel top with bolts and nuts. The bolt holes are sealed with plastic washers on each side, creating a watertight seal. This hardware is included.