The volume of the ION S tail bag can be expanded with a zipper from 7 to 15L and therefore offers enough storage for drinks, a change of clothes, safety vest and other little things that you need on a daytrip or short trip. The compact bag can be lashed onto riveted D-rings with the included loop straps. Two flaps with hook-and-loop closure and a slot on the underside also enable quick and secure attachment to the seat or rack. The reinforced sides, the padded lid and straps for tightening the volume expansion guarantee a solid shape. Things stowed in the outer pocket or mesh compartment in the inside of the lid are particularly close at hand. A carrying handle makes the ION tail bag a practical travel companion.