The Satellite is a 25 litre backpack that connects to the Wheelie Traveller. When connected, it serves as a capacity extender to the main bag, increasing the total volume to 100 litres. When deconnected, the Satellite is a very useful city bag. There are three mesh outer pockets for drinks, sunscreen, city map etc. Inside there is a small compartment for keys and other valuables. The Satellite has a sleeve that allows you to use the backpack with the Wheelie hip belt. This way, it becomes an incredibly comfortable pack, even with considerable weight.
The Wheelie rain cover fits a Wheelie with and without attached Satellite. Accessory More info