SW-Motech ION S tail bagION Extension Tail bag Ideal for small and sporty bikes: The volume of the ION S tail bag can be expanded via zipper from 7 to 15 l and therefore offers enough storage for drinks, a change of clothes, and other necessities for day trips and short rides. The compact bag can be lashed onto riveted D rings with the included loop straps. Two straps with hook and loop closure, along with a slot on the underside, enable fast and secure attachment to a seat